Day 16: Early exit search loop

This reverts commit 7bd424d1f9.

.aocbench.yaml

@@ -4,8 +4,8 @@ language: "scala"
 dockerfile: "Dockerfile"
 code: "/code"
 workdir: "/code"
-runonce: "./mill aoc.assembly"
+runonce: "./mill aoc.nativeImage"
-cmd: "java -jar ./out/aoc/assembly.dest/out.jar %day% %input%"
+cmd: "./out/aoc/nativeImage.dest/aoc %day% %input%"
 environment:
   - AOC_BENCH=1
 daypath: "aoc/src/dev/ctsk/aoc/days/Day%dayzero%.scala"

Dockerfile

@@ -1,9 +1,15 @@
-FROM eclipse-temurin:23-jdk-alpine
+FROM eclipse-temurin:23-jdk
 
-RUN apk add curl
+RUN apt-get update && apt-get install -y curl gzip build-essential libz-dev
+RUN curl -fL "https://github.com/coursier/launchers/raw/master/cs-x86_64-pc-linux.gz" | gzip -d > cs
+RUN chmod +x cs
+RUN cp cs /usr/local/bin
+RUN ./cs setup --yes
 
 COPY . /build
 
 WORKDIR /build
 
-RUN ./mill aoc.assembly
+RUN ./mill aoc.assembly
+
+RUN ./mill aoc.nativeImage

aoc/src/dev/ctsk/aoc/DisjointSets.scala

@@ -0,0 +1,27 @@
+package dev.ctsk.aoc
+
+import scala.collection.mutable
+
+case class DisjointSets[A](members: Seq[A]):
+  private val parent = mutable.Map.from(members.zip(members))
+  private val rank = mutable.Map.from(members.map(_ -> 1))
+
+  def joint(m1: A, m2: A): Boolean = find(m1) == find(m2)
+
+  def find(member: A): A =
+    val up = parent(member)
+    if up == member then up
+    else {
+      val root = find(up); parent(member) = root; root
+    }
+
+  def union(m1: A, m2: A): Unit =
+    val p1 = find(m1);
+    val p2 = find(m2)
+    if p1 == p2 then return
+    val r1 = rank(p1);
+    val r2 = rank(p2)
+    r1.compare(r2) match
+      case k if k < 0 => parent(p1) = p2
+      case 0          => parent(p1) = p2; rank(p2) += 1
+      case k if k > 0 => parent(p2) = p1

aoc/src/dev/ctsk/aoc/Grid.scala

@@ -1,14 +1,31 @@
 package dev.ctsk.aoc
 
+import scala.reflect.ClassTag
+
+object Point:
+  def of(x: Long, y: Long): Point = Point(x.toInt, y.toInt)
+
 case class Point(x: Int, y: Int):
   def +(o: Point): Point = Point(x + o.x, y + o.y)
   def -(o: Point): Point = Point(x - o.x, y - o.y)
   def *(n: Int): Point = Point(n * x, n * y)
   def reduce: Point = { val g = gcd(x.abs, y.abs); Point(x / g, y / g) }
+  def manhattan: Int = x.abs + y.abs
+
+val DIRS = Seq(Direction.Up, Direction.Right, Direction.Down, Direction.Left)
+
+object Direction:
+  def from(c: Char): Direction =
+    c match
+      case '>' => Direction.Right
+      case '<' => Direction.Left
+      case '^' => Direction.Up
+      case 'v' => Direction.Down
 
 enum Direction:
   case Up, Right, Down, Left
   def turnRight: Direction = Direction.fromOrdinal((ordinal + 1) % 4)
+  def turnLeft: Direction = Direction.fromOrdinal((ordinal - 1 + 4) % 4)
 
   def toPoint: Point =
     this match
@@ -29,6 +46,7 @@ enum Direction:
       case Left  => Right
 
 case class Pose(pos: Point, dir: Direction):
+  def turnLeft: Pose = Pose(pos, dir.turnLeft)
   def turnRight: Pose = Pose(pos, dir.turnRight)
   def step: Pose = Pose(dir(pos), dir)
   def step(n: Int): Pose = Pose(dir.applyN(pos, n), dir)
@@ -67,3 +85,12 @@ class Grid[A](val data: Array[Array[A]]):
       x <- data.indices
       y <- data(x).indices
     yield Point(x, y)
+
+  def fill(value: A): Unit =
+    for
+      row <- 0 until height
+      col <- 0 until width
+    do data(row)(col) = value
+
+  def sameSizeWith[B: ClassTag](value: B) =
+    Grid(Array.fill(height, width)(value))

aoc/src/dev/ctsk/aoc/Main.scala

@@ -14,7 +14,20 @@ val solvers = Map[Int, Solver](
   9 -> Day09,
   10 -> Day10,
   11 -> Day11,
-  12 -> Day12
+  12 -> Day12,
+  13 -> Day13,
+  14 -> Day14,
+  15 -> Day15,
+  16 -> Day16,
+  17 -> Day17,
+  18 -> Day18,
+  19 -> Day19,
+  20 -> Day20,
+  21 -> Day21,
+  22 -> Day22,
+  23 -> Day23,
+  24 -> Day24,
+  25 -> Day25
 )
 
 def runSolver(solver: Solver, input: os.Path): Unit =
@@ -24,15 +37,22 @@ def runSolver(solver: Solver, input: os.Path): Unit =
       println(solution.p1)
       println(solution.p2)
     case None =>
-      println(f"Preprocessing: ${timings.prep}%24s μs")
+      println(f"=============================================================")
-      println(f"Part 1: ${solution.p1}%15s ${timings.p1}%15s μs")
+      println(
-      println(f"Part 2: ${solution.p2}%15s ${timings.p2}%15s μs")
+        f"Day ${solver.day}%02d ------------------------------------------------------"
+      )
+      println(f"Prep ${timings.prep}%53s μs")
+      println(f"Part 1 ${solution.p1}%40s ${timings.p1}%10s μs")
+      println(f"Part 2 ${solution.p2}%40s ${timings.p2}%10s μs")
+      println(f"-------------------------------------------------------------")
+      println(f"Total ${timings.total}%52s μs")
+      println(f"=============================================================")
 
 @main def main(day: String, input: String): Unit =
   val num = """(\d+)""".r
   day match
     case "all" =>
-      solvers.foreach { case (day, solver) =>
+      solvers.toList.sortBy(_._1).foreach { case (day, solver) =>
         runSolver(solver, os.Path(input, os.pwd) / f"$day%02d.in")
       }
     case num(_) =>

aoc/src/dev/ctsk/aoc/Memo.scala

@@ -0,0 +1,11 @@
+package dev.ctsk.aoc
+
+import scala.collection.mutable
+
+object Memo:
+  def Y[I, O](f: (I, I => O) => O): I => O =
+    lazy val yf: I => O = Memo(f(_, yf(_))); yf
+
+class Memo[-I, +O](f: I => O) extends (I => O):
+  private[this] val memo = mutable.Map.empty[I, O]
+  def apply(i: I): O = { lazy val o = f(i); memo.getOrElseUpdate(i, o) }

aoc/src/dev/ctsk/aoc/Parse.scala

@@ -1,6 +1,6 @@
 package dev.ctsk.aoc
 
-def NAT_REGEX = """(\d+)""".r
+def NAT_REGEX = """(-?\d+)""".r
 
 def longs(string: String): Vector[Long] =
   NAT_REGEX.findAllIn(string).map(_.toLong).toVector

aoc/src/dev/ctsk/aoc/Solution.scala

@@ -1,10 +1,11 @@
 package dev.ctsk.aoc
 
-case class Timings(prep: Long, p1: Long, p2: Long)
+case class Timings(prep: Long, p1: Long, p2: Long):
+  def total: Long = prep + p1 + p2
 
 case class Solution(p1: Object, p2: Object)
 
-abstract class Solver(day: Int):
+abstract class Solver(val day: Int):
   def run(input: os.ReadablePath): (Timings, Solution)
 
   def timed[A](solution: => A): (Long, A) =

aoc/src/dev/ctsk/aoc/Trie.scala

@@ -0,0 +1,25 @@
+package dev.ctsk.aoc
+
+import scala.collection.mutable
+
+class Trie(
+    var isPrefix: Boolean = false,
+    var children: mutable.Map[Char, Trie] = mutable.Map.empty
+):
+  def insert(w: String, pos: Int = 0): Unit =
+    if pos == w.length
+    then isPrefix = true
+    else
+      children.get(w(pos)) match
+        case Some(child) => child.insert(w, pos + 1)
+        case None =>
+          val child = Trie()
+          children(w(pos)) = child
+          child.insert(w, pos + 1)
+
+  def prefixes(w: String, pos: Int = 0, acc: List[Int] = Nil): List[Int] =
+    val newAcc = if isPrefix then pos +: acc else acc
+    if pos >= w.length then return newAcc
+    children.get(w(pos)) match
+      case None        => newAcc
+      case Some(child) => child.prefixes(w, pos + 1, newAcc)

aoc/src/dev/ctsk/aoc/Utils.scala

@@ -6,3 +6,8 @@ def gcd(a: Int, b: Int): Int =
 extension [A](xs: Seq[A])
   def pairs: Iterator[(A, A)] =
     xs.combinations(2).map(xs => (xs(0), xs(1)))
+
+def eea(a: Int, b: Int): (Int, Int, Int) =
+  if b == 0 then return (a, 1, 0)
+  val (d, x, y) = eea(b, a % b)
+  (d, y, x - y * (a / b))

aoc/src/dev/ctsk/aoc/days/Day12.scala

@@ -54,13 +54,16 @@ object Day12 extends Solver(12):
     plots.sizes.map((k, v) => v * plots.edges(k).length).sum
 
   def part2(plots: Plots): Int =
-    plots.sizes
+    def is(pt: Point, id: Int): Boolean = plots.layout(pt).contains(id)
-      .map((id, size) =>
+    def cost(id: Int, size: Int): Int =
-        val edge = plots.edges(id).toSet
+      size * plots
-        val corners = edge -- edge.map((pt, dir) => (dir.turnRight(pt), dir))
+        .edges(id)
-        size * corners.size
+        .map((pt, dir) =>
-      )
+          Seq(dir.turnLeft(pt), dir.turnRight(pt))
-      .sum
+            .count(adj => is(dir(adj), id) || !is(adj, id))
+        )
+        .sum / 2
+    plots.sizes.map(cost).sum
 
   override def run(input: os.ReadablePath): (Timings, Solution) =
     val grid = Grid(os.read.lines(input).map(_.toArray).toArray)

aoc/src/dev/ctsk/aoc/days/Day13.scala

@@ -0,0 +1,32 @@
+package dev.ctsk.aoc.days
+
+import dev.ctsk.aoc.*
+import os.ReadablePath
+
+object Day13 extends Solver(13):
+  def solve(machine: Vector[Long], error: Long = 0): Option[(Long, Long)] =
+    val Vector(ax, ay, bx, by, px_, py_) = machine
+    val (px, py) = (px_ + error, py_ + error)
+    val j = (py * ax - px * ay) / (ax * by - bx * ay)
+    val i = (px * by - py * bx) / (ax * by - bx * ay)
+    Option.when(i * ax + j * bx == px && i * ay + j * by == py)((i, j))
+
+  override def run(input: ReadablePath): (Timings, Solution) =
+    def inRange(i: Long, j: Long) =
+      (0 to 100 contains i) && (0 to 100 contains j)
+
+    val (pre_time, machines) = timed { os.read(input).split("\n\n").map(longs) }
+
+    val (p1_time, p1) = timed {
+      machines
+        .map(solve(_))
+        .collect { case Some(i, j) if inRange(i, j) => i * 3 + j }
+        .sum
+    }
+
+    val ERR = 10000000000000L
+    val (p2_time, p2) = timed {
+      machines.map(solve(_, ERR)).collect { case Some(i, j) => i * 3 + j }.sum
+    }
+
+    (Timings(pre_time, p1_time, p2_time), Solution(Long.box(p1), Long.box(p2)))

aoc/src/dev/ctsk/aoc/days/Day14.scala

@@ -0,0 +1,44 @@
+package dev.ctsk.aoc.days
+
+import dev.ctsk.aoc._
+import os.ReadablePath
+
+def mu(arr: Seq[Int]) = arr.sum * 1.0 / arr.length
+def va(arr: Seq[Int]) = { val m = mu(arr); arr.map(v => (v - m) * (v - m)).sum }
+
+object Day14 extends Solver(14):
+  private val Y = 101
+  private val X = 103
+
+  def go(robot: (Point, Point), time: Int): Point =
+    val dst = robot._1 + robot._2 * time
+    Point((dst.x % X + X) % X, (dst.y % Y + Y) % Y)
+
+  def part1(robots: Array[(Point, Point)]): Int =
+    val end = robots.map(go(_, 100))
+    val ul = end.count(v => v._1 < X / 2 && v._2 < Y / 2)
+    val ur = end.count(v => v._1 < X / 2 && v._2 > Y / 2)
+    val dl = end.count(v => v._1 > X / 2 && v._2 < Y / 2)
+    val dr = end.count(v => v._1 > X / 2 && v._2 > Y / 2)
+    ul * ur * dl * dr
+
+  def part2(robots: Array[(Point, Point)]): Int =
+    val xo = (0 to 103).minBy(t => va(robots.map(go(_, t).x).take(50)))
+    val yo = (0 to 103).minBy(t => va(robots.map(go(_, t).y).take(50)))
+    val (_, iX, iY) = eea(X, Y)
+    (xo * iY * Y + yo * iX * X) % (X * Y)
+
+  override def run(input: ReadablePath): (Timings, Solution) =
+    def parse(line: String): (Point, Point) =
+      longs(line) match {
+        case Vector(y, x, dy, dx) => (Point.of(x, y), Point.of(dx, dy))
+      }
+
+    val (pre_time, robots) = timed { os.read.lines(input).map(parse).toArray }
+    val (p1_time, p1) = timed { part1(robots) }
+    val (p2_time, p2) = timed { part2(robots) }
+
+    (
+      Timings(pre_time, p1_time, p2_time),
+      Solution(Int.box(p1), Int.box(p2))
+    )

aoc/src/dev/ctsk/aoc/days/Day15.scala

@@ -0,0 +1,88 @@
+package dev.ctsk.aoc.days
+
+import dev.ctsk.aoc._
+import dev.ctsk.aoc.Direction._
+
+object Day15 extends Solver(15):
+  case class Input(grid: Grid[Char], moves: Seq[Direction])
+  def pre(input: os.ReadablePath): Input =
+    val Array(map_, moves_) = os.read(input).split("\n\n")
+    Input(
+      Grid(map_.linesIterator.map(_.toArray).toArray),
+      moves_.filter(_ != '\n').map(Direction.from)
+    )
+
+  def part1(input: Input): Int =
+    val grid = Grid(input.grid.data.map(_.clone))
+    var cur = grid.findFirst(_ == '@').get
+    for move <- input.moves do
+      val dst = Iterator
+        .iterate(cur)(move(_))
+        .takeWhile(!grid(_).contains('#'))
+        .find(grid(_).contains('.'))
+
+      dst match
+        case Some(dst) =>
+          grid(dst) = grid(move(cur)).get
+          grid(move(cur)) = grid(cur).get
+          grid(cur) = '.'; cur = move(cur)
+        case None => ()
+
+    grid.find(_ == 'O').map(p => 100 * p.x + p.y).sum
+
+  def part2(input: Input): Int =
+    val Input(grid_, moves) = input
+    val grid = Grid(
+      grid_.data.map(
+        _.flatMap {
+          case 'O' => "[]"
+          case '.' => ".."
+          case '@' => "@."
+          case '#' => "##"
+        }
+      )
+    )
+
+    def blocked(p: Point): Boolean = grid(p).contains('#')
+    def free(p: Point): Boolean = grid(p).contains('.')
+    def clear(p: Point): Unit = { grid(p) = '.' }
+    def shift(d: Direction, p: Point): Unit = { grid(d(p)) = grid(p).get; clear(p) }
+
+    def extend(p: Point): Seq[Point] =
+      grid(p).get match {
+        case '[' => Seq(p, Right(p))
+        case ']' => Seq(Left(p), p)
+        case c   => Seq(p)
+      }
+
+    def push(move: Direction, cur: Point): Boolean =
+      move match
+        case Left | Right =>
+          def step(cur: Point): Boolean =
+            if free(cur) then return true
+            if blocked(cur) then return false
+            if step(move(cur)) then { shift(move, cur); true }
+            else false
+          step(cur)
+        case Up | Down =>
+          def step(cur: Set[Point]): Boolean =
+            if cur.isEmpty then return true
+            if cur.exists(blocked) then return false
+            val next = cur.map(move(_)).filterNot(free).flatMap(extend)
+            if step(next) then { cur.foreach { shift(move, _) }; true }
+            else false
+          step(Set(cur))
+
+    var cur = grid.findFirst(_ == '@').get
+    for (move <- moves) do if push(move, cur) then { cur = move(cur) }
+    grid.find(_ == '[').map(p => 100 * p.x + p.y).sum
+
+  override def run(input_ : os.ReadablePath): (Timings, Solution) =
+    val (pre_time, input) = timed { pre(input_) }
+    val (p1_time, p1_solution) = timed { part1(input) }
+    val (p2_time, p2_solution) = timed { part2(input) }
+
+    (
+      Timings(pre_time, p1_time, p2_time),
+      Solution(Int.box(p1_solution), Int.box(p2_solution))
+    )

aoc/src/dev/ctsk/aoc/days/Day16.scala

@@ -0,0 +1,78 @@
+package dev.ctsk.aoc.days
+
+import dev.ctsk.aoc.{Direction, *}
+
+import scala.collection.mutable
+import scala.util.boundary
+import scala.util.boundary.break
+
+object Day16 extends Solver(16):
+  override def run(input_ : os.ReadablePath): (Timings, Solution) =
+    val (pre_time, grid) = timed {
+      Grid(os.read.lines(input_).map(_.toArray).toArray)
+    }
+
+    val start = grid.findFirst(_ == 'S').get
+    val end = grid.findFirst(_ == 'E').get
+
+    case class State(distance: Int, pose: Pose)
+
+    def search(start: Pose): (Map[Pose, Int], Map[Pose, List[Pose]]) =
+      val distance = mutable.Map(start -> 0)
+      val ancestor = mutable.Map.empty[Pose, List[Pose]]
+      var near = mutable.Stack(State(0, start))
+      var far = mutable.Stack.empty[State]
+
+      inline def relax(u: Pose, v: Pose, vDist: Int, isFar: Boolean): Unit =
+        val oldDist = distance.getOrElse(v, 1_000_000)
+        if vDist == oldDist then ancestor(v) +:= u
+        if vDist < oldDist then
+          ancestor(v) = List(u)
+          distance(v) = vDist
+          if isFar
+          then far.push(State(vDist, v))
+          else near.push(State(vDist, v))
+
+      boundary:
+        while near.nonEmpty do
+          var atEnd = false;
+          while near.nonEmpty do
+            val State(uDist, u) = near.pop()
+            atEnd |= u.pos == end
+            if uDist == distance(u) then
+              if !grid(u.step.pos).contains('#') then
+                relax(u, u.step, uDist + 1, false)
+              for (v <- Seq(u.turnLeft, u.turnRight)) do
+                relax(u, v, uDist + 1000, true)
+
+          if atEnd then break()
+
+          val tmp = near
+          near = far
+          far = tmp
+
+      (distance.toMap, ancestor.toMap)
+
+    val (p1_time, (distance, ancestor)) = timed {
+      search(Pose(start, Direction.Right))
+    }
+
+    val endPose = DIRS.map(Pose(end, _)).minBy(distance.getOrElse(_, 1_000_000))
+
+    val p1 = distance(endPose)
+
+    val (p2_time, p2) = timed {
+      val all = mutable.Set(endPose)
+      var cur = Set(endPose)
+
+      while cur.nonEmpty do
+        cur = cur.filter(_ != Pose(start, Direction.Right)).flatMap(ancestor(_))
+        all.addAll(cur)
+
+      all.map(_.pos).size
+    }
+
+    (
+      Timings(0, p1_time, p2_time),
+      Solution(Int.box(p1), Int.box(p2))
+    )

aoc/src/dev/ctsk/aoc/days/Day17.scala

@@ -0,0 +1,75 @@
+package dev.ctsk.aoc.days
+
+import dev.ctsk.aoc.*
+
+import scala.util.boundary
+import scala.util.boundary.break
+
+object Day17 extends Solver(17):
+  case class Machine(var code: IndexedSeq[Long]):
+    def execute(
+        registers: Map[Char, Long],
+        output: Option[Int] = None
+    ): Vector[Long] =
+      val reg = Array.from(registers).sorted.map(_._2)
+      var pc = 0
+
+      def combo(i: Long): Long =
+        i match
+          case i if i <= 3          => i
+          case i if i > 3 && i <= 6 => reg(i.toInt - 4)
+
+      var out = Vector.empty[Long]
+      boundary:
+        while pc < code.length do
+          code(pc) match
+            case 0 => reg(0) >>= combo(code(pc + 1)); pc += 2
+            case 1 => reg(1) ^= code(pc + 1); pc += 2
+            case 2 => reg(1) = combo(code(pc + 1)) % 8; pc += 2
+            case 3 => if reg(0) != 0 then pc = code(pc + 1).toInt else pc += 2
+            case 4 => reg(1) = reg(1) ^ reg(2); pc += 2
+            case 5 =>
+              out :+= combo(code(pc + 1)) % 8;
+              if output.exists(_ >= out.length) then break()
+              pc += 2
+            case 6 => reg(1) = reg(0) >> combo(code(pc + 1)); pc += 2
+            case 7 => reg(2) = reg(0) >> combo(code(pc + 1)); pc += 2
+
+      out
+
+  def part1(machine: Machine, initialRegs: Map[Char, Long]): String =
+    machine.execute(initialRegs).mkString(",")
+
+  def part2(machine: Machine, initialRegs: Map[Char, Long]): Long =
+    val target = machine.code.reverse
+
+    def rec(pos: Int = 0, acc: Long = 0): Option[Long] =
+      if pos >= target.length then return Some(acc)
+
+      def check(aVal: Long): Boolean =
+        machine.execute(initialRegs.updated('A', aVal), Some(1)).head
+          == target(pos)
+
+      (0 until 8)
+        .map((acc << 3) + _)
+        .filter(check)
+        .flatMap(rec(pos + 1, _))
+        .headOption
+
+    rec().get
+
+  override def run(input: os.ReadablePath): (Timings, Solution) =
+    val Array(initial_, code_) = os.read(input).split("\n\n")
+    val initialRegs = initial_.linesIterator
+      .map(_.split(" "))
+      .map(a => a(1)(0) -> a(2).toLong)
+      .toMap
+    val machine = Machine(longs(code_).toArray)
+
+    val (p1_time, p1_solution) = timed { part1(machine, initialRegs) }
+    val (p2_time, p2_solution) = timed { part2(machine, initialRegs) }
+
+    (
+      Timings(0, p1_time, p2_time),
+      Solution(p1_solution, Long.box(p2_solution))
+    )

aoc/src/dev/ctsk/aoc/days/Day18.scala

@@ -0,0 +1,60 @@
+package dev.ctsk.aoc.days
+
+import dev.ctsk.aoc.*
+
+import scala.collection.mutable
+import scala.util.boundary
+import scala.util.boundary.break
+
+object Day18 extends Solver(18):
+  val SIZE = 70; val P1_COUNT = 1024
+
+  def part1(grid: Grid[Char], coords: Seq[Point]): Int =
+    for coord <- coords.take(P1_COUNT) do grid(coord) = '#'
+    val dist = Grid(Array.fill(SIZE + 1, SIZE + 1)(-1))
+    val dq = mutable.ArrayDeque((0, Point(0, 0)))
+
+    while dq.nonEmpty do
+      val (distance, pt) = dq.removeHead()
+      for
+        adj <- DIRS.map(_(pt))
+        if grid(adj).contains('.')
+        if dist(adj).contains(-1)
+      do
+        dist(adj) = (distance + 1)
+        dq += ((distance + 1, adj))
+
+    dist(Point(SIZE, SIZE)).get
+
+  def part2(grid: Grid[Char], coords: Seq[Point]): Point =
+    for coord <- coords do grid(coord) = '#'
+
+    val sets = DisjointSets(grid.points)
+    for
+      point <- grid.points
+      adj <- DIRS.map(_(point))
+      if grid(point).contains('.')
+      if grid(adj).contains('.')
+    do sets.union(point, adj)
+
+    boundary:
+      for coord <- coords.reverse do
+        grid(coord) = '.'
+        for pt <- DIRS.map(_(coord)) if grid(pt).contains('.') do
+          sets.union(coord, pt)
+        if sets.joint(Point(0, 0), Point(SIZE, SIZE)) then break(coord)
+
+      coords.head
+
+  override def run(input: os.ReadablePath): (Timings, Solution) =
+    val grid = Grid(Array.fill(SIZE + 1, SIZE + 1)('.'))
+    val (pre_time, coords) = timed {
+      os.read.lines(input).map(longs).map(v => Point.of(v(0), v(1)))
+    }
+    val (p1_time, p1) = timed { part1(grid, coords) }
+    val (p2_time, p2) = timed { part2(grid, coords) }
+
+    (
+      Timings(pre_time, p1_time, p2_time),
+      Solution(Int.box(p1), f"${p2.x},${p2.y}")
+    )

aoc/src/dev/ctsk/aoc/days/Day19.scala

@@ -0,0 +1,26 @@
+package dev.ctsk.aoc.days
+
+import dev.ctsk.aoc.*
+
+object Day19 extends Solver(19):
+  def pre(input: os.ReadablePath): (Trie, Seq[String]) =
+    val Array(rules_, words_) = os.read(input).split("\n\n")
+    val trie = Trie()
+    for rule <- rules_.split(", ") do trie.insert(rule)
+    (trie, words_.linesIterator.toSeq)
+
+  private def arrangements(trie: Trie, word: String): Long =
+    def rec(offset: Int, inj: Int => Long): Long =
+      if offset == word.length then return 1L
+      trie.prefixes(word, offset).map(inj).sum
+    Memo.Y(rec)(0)
+
+  override def run(input: os.ReadablePath): (Timings, Solution) =
+    val (pre_time, (trie, words)) = timed { pre(input) }
+    val (p1_time, p1) = timed { words.count(arrangements(trie, _) > 0) }
+    val (p2_time, p2) = timed { words.map(arrangements(trie, _)).sum }
+
+    (
+      Timings(pre_time, p1_time, p2_time),
+      Solution(Int.box(p1), Long.box(p2))
+    )

aoc/src/dev/ctsk/aoc/days/Day20.scala

@@ -0,0 +1,41 @@
+package dev.ctsk.aoc.days
+
+import dev.ctsk.aoc.*
+
+import collection.parallel.CollectionConverters.*
+
+object Day20 extends Solver(20):
+  override def run(input: os.ReadablePath): (Timings, Solution) =
+    val grid = Grid(os.read.lines(input).map(_.toArray).toArray)
+    val start = grid.findFirst(_ == 'S').get
+    val end = grid.findFirst(_ == 'E').get
+
+    val trace = Iterator
+      .unfold((end, end))((cur, prev) =>
+        val n = DIRS.map(_(cur)).filter(_ != prev).find(!grid(_).contains('#'))
+        n.map(nxt => (cur, (nxt, cur)))
+      )
+      .concat(Seq(start))
+      .toArray
+
+    def cheats(radius: Int): Int =
+      trace.indices.par
+        .map(toDist =>
+          (toDist + 100 until trace.length)
+            .count(fromDist =>
+              val from = trace(toDist)
+              val to = trace(fromDist)
+              val dist = (from - to).manhattan
+
+              dist <= radius && (fromDist - toDist >= 100 + dist)
+            )
+        )
+        .sum
+
+    val p1 = timed { cheats(2) }
+    val p2 = timed { cheats(20) }
+
+    (
+      Timings(0, p1._1, p2._1),
+      Solution(Int.box(p1._2), Int.box(p2._2))
+    )

aoc/src/dev/ctsk/aoc/days/Day21.scala

@@ -0,0 +1,48 @@
+package dev.ctsk.aoc.days
+
+import dev.ctsk.aoc.*
+
+object Day21 extends Solver(21):
+  private val keyPad = Grid(Array("789", "456", "123", " 0A").map(_.toArray))
+  private val buttonPad = Grid(Array(" ^A", "<v>").map(_.toArray))
+
+  private val paths = Memo(paths_)
+  private def paths_(args: (Char, Char, Grid[Char])): Array[Array[Char]] =
+    val (from, to, grid) = args
+    val Point(fx, fy) = grid.findFirst(_ == from).get
+    val Point(tx, ty) = grid.findFirst(_ == to).get
+    val ops = Seq((fx, tx, 'v'), (tx, fx, '^'), (fy, ty, '>'), (ty, fy, '<'))
+    val seq = ops.flatMap((a, b, c) => (a until b).map(_ => c))
+
+    def gap(path: Array[Char]): Boolean =
+      path
+        .scanLeft(Point(fx, fy))((acc, c) => Direction.from(c)(acc))
+        .exists(grid(_).contains(' '))
+
+    seq.permutations.map(_.toArray).filterNot(gap).toArray
+
+  private def countPresses(codes: Array[String], numRobots: Int): Long =
+    type State = (Char, Char, Int)
+    def minCost_(state: State, f: State => Long): Long =
+      val (from, to, robots) = state
+      if robots == 0 then return 1
+      paths(from, to, if robots == numRobots then keyPad else buttonPad)
+        .map('A' +: _ :+ 'A')
+        .map(path => path.sliding(2).map(w => f(w(0), w(1), robots - 1)).sum)
+        .min
+    val minCost = Memo.Y(minCost_)
+
+    def evalCode(line: String): Long =
+      ('A' +: line).sliding(2).map(w => minCost(w(0), w(1), numRobots)).sum
+
+    codes.map(code => code.init.toInt * evalCode(code)).sum
+
+  override def run(input: os.ReadablePath): (Timings, Solution) =
+    val codes = os.read.lines(input).toArray
+    val (p1_time, p1_solution) = timed { countPresses(codes, 3) }
+    val (p2_time, p2_solution) = timed { countPresses(codes, 26) }
+
+    (
+      Timings(0, p1_time, p2_time),
+      Solution(Long.box(p1_solution), Long.box(p2_solution))
+    )

aoc/src/dev/ctsk/aoc/days/Day22.scala

@@ -0,0 +1,60 @@
+package dev.ctsk.aoc.days
+
+import dev.ctsk.aoc.*
+import scala.collection.mutable
+
+object Day22 extends Solver(22):
+  inline def hash(n: Long): Long =
+    var secret = n
+    secret ^= (secret << 6)
+    secret &= 0xffffff
+    secret ^= (secret >> 5)
+    secret &= 0xffffff
+    secret ^= (secret << 11)
+    secret &= 0xffffff
+    secret
+
+  def hash(n: Long, count: Int): Long =
+    Iterator.iterate(n)(hash).drop(count).next()
+
+  def part1(initial: Seq[Long]): Long = initial.map(hash(_, 2000)).sum
+
+  def part2(initial: Seq[Long]): Long =
+    inline def update(hash: Int, next: Int): Int =
+      ((hash << 5) & 0xfffff) | (next + 10)
+
+    val maxHash = Seq(9, 9, 9, 9).fold(0)(update)
+    val bananas = Array.fill(maxHash)(0)
+    val seen = mutable.BitSet(maxHash)
+
+    initial.foreach { value =>
+      seen.clear()
+      val it = Iterator.iterate(value)(hash).map(_.toInt % 10)
+      var last = it.next()
+      var window = 0
+
+      for v <- it.take(3) do
+        val diff = v - last
+        last = v
+        window = update(window, diff)
+
+      for v <- it.take(2000 - 3) do
+        val diff = v - last
+        last = v
+        window = update(window, diff)
+        if !seen(window) then
+          seen += window
+          bananas(window) += v
+    }
+
+    bananas.max
+
+  override def run(input: os.ReadablePath): (Timings, Solution) =
+    val initial = os.read.lines(input).map(_.toLong)
+    val (p1_time, p1_solution) = timed { part1(initial) }
+    val (p2_time, p2_solution) = timed { part2(initial) }
+
+    (
+      Timings(0, p1_time, p2_time),
+      Solution(Long.box(p1_solution), Long.box(p2_solution))
+    )

aoc/src/dev/ctsk/aoc/days/Day23.scala

@@ -0,0 +1,59 @@
+package dev.ctsk.aoc.days
+
+import dev.ctsk.aoc.*
+
+object Day23 extends Solver(23):
+  override def run(input: os.ReadablePath): (Timings, Solution) =
+    val edge = "([^-]*)-([^-]*)".r
+
+    def id(s: String): Int = (s(0) - 'a') * 26 + (s(1) - 'a')
+
+    val (pre_time, graph) = timed {
+      os.read
+        .lines(input)
+        .flatMap { case edge(from, to) => Seq((from, to), (to, from)) }
+        .groupMap(_._1)(_._2)
+        .view
+        .mapValues(_.toSet)
+        .toMap
+    }
+
+    val (p1_time, triangles) = timed {
+      (for
+        (u, uOut) <- graph
+        v <- uOut
+        w <- graph(v).intersect(uOut)
+        if Seq(u(0), v(0), w(0)).contains('t')
+      yield Set(u, v, w)).toSet.size
+    }
+
+    type Nodes = Set[String]
+    def cliques(clique: Nodes, cand_ : Nodes, excl_ : Nodes): Set[Nodes] =
+      if cand_.isEmpty && excl_.isEmpty then return Set(clique)
+      if cand_.isEmpty then return Set.empty
+      val pivot = cand_.maxBy(graph(_).size)
+
+      var candidates = cand_
+      var excluded = excl_
+      var acc = Set.empty[Set[String]]
+
+      for v <- cand_ -- graph(pivot)
+      do
+        acc ++= cliques(clique + v, candidates & graph(v), excluded & graph(v))
+        candidates = candidates - v
+        excluded = excluded + v
+
+      acc
+
+    val (p2_time, password) = timed {
+      cliques(Set.empty, graph.keySet, Set.empty)
+        .maxBy(_.size)
+        .toArray
+        .sorted
+        .mkString(",")
+    }
+
+    (
+      Timings(pre_time, p1_time, p2_time),
+      Solution(Int.box(triangles), password)
+    )

aoc/src/dev/ctsk/aoc/days/Day24.scala

@@ -0,0 +1,81 @@
+package dev.ctsk.aoc.days
+
+import dev.ctsk.aoc.*
+
+import scala.collection.mutable
+
+object Day24 extends Solver(24):
+  extension (s: String)
+    def binLong: Long = s.foldLeft(0L)((acc, c) => (acc << 1) + c.asDigit)
+
+  enum Op(val f: Int => Int => Int):
+    case AND extends Op(x => y => x & y)
+    case OR extends Op(x => y => x | y)
+    case XOR extends Op(x => y => x ^ y)
+
+  case class Gate(op: Op, lhs: String, rhs: String)
+  object Gate:
+    def of(op: Op, lhs: String, rhs: String): Gate =
+      Gate(op, Seq(lhs, rhs).min, Seq(lhs, rhs).max)
+
+  override def run(input: os.ReadablePath): (Timings, Solution) =
+    val Array(inits_, wires_) = os.read(input).split("\n\n")
+
+    val inits = inits_.linesIterator
+      .map(_.split(": "))
+      .map { case Array(id, value) => (id, value.toInt) }
+      .toMap
+
+    val wires = wires_.linesIterator
+      .map(_.split(" "))
+      .map { case Array(in1, op, in2, _, out) =>
+        (out, Gate.of(Op.valueOf(op), in1, in2))
+      }
+      .toArray
+
+    val outs = wires.toMap
+    val ins = mutable.Map.from(wires.map(_.swap))
+
+    def tag(t: Char)(i: Int): String = f"$t$i%02d"
+    val x = tag('x'); val y = tag('y'); val z = tag('z')
+
+    def resolve_(id: String, f: String => Int): Int =
+      outs.get(id) match
+        case Some(gate) => gate.op.f(f(gate.lhs))(f(gate.rhs))
+        case _          => inits(id)
+    val resolve = Memo.Y(resolve_)
+
+    val p1 = timed { (0 to 45).reverse.map(z).map(resolve).mkString.binLong }
+
+    val p2 = timed {
+      val renames = mutable.Map.empty[String, String]
+      def rename(a: String, b: String): Unit =
+        renames(a) = b
+        renames(b) = a
+      def re(a: String): String = renames.getOrElse(a, a)
+      def lookup(gate: Gate): Option[String] =
+        ins.get(Gate.of(gate.op, re(gate.lhs), re(gate.rhs)))
+
+      var carry = ins(Gate.of(Op.AND, x(0), y(0)))
+      for i <- 1 to 44
+      do
+        val x_ = x(i)
+        val y_ = y(i)
+        val x_y_xor = lookup(Gate.of(Op.XOR, x_, y_)).get
+        val x_y_and = lookup(Gate.of(Op.AND, x_, y_)).get
+        val out = lookup(Gate.of(Op.XOR, x_y_xor, carry)) match
+          case Some(out) => out
+          case None =>
+            rename(x_y_xor, x_y_and)
+            lookup(Gate.of(Op.XOR, x_y_xor, carry)).get
+        if out != z(i) then rename(out, z(i))
+        val pre_carry = lookup(Gate.of(Op.AND, carry, x_y_xor)).get
+        carry = lookup(Gate.of(Op.OR, pre_carry, x_y_and)).get
+
+      renames.keys.toArray.sorted.mkString(",")
+    }
+
+    (
+      Timings(0, p1._1, p2._1),
+      Solution(Long.box(p1._2), p2._2)
+    )

aoc/src/dev/ctsk/aoc/days/Day25.scala

@@ -0,0 +1,35 @@
+package dev.ctsk.aoc.days
+
+import dev.ctsk.aoc.*
+import collection.parallel.CollectionConverters.*
+
+object Day25 extends Solver(25):
+  override def run(input: os.ReadablePath): (Timings, Solution) =
+    val (pre_time, (locks, keys)) = timed {
+      os
+        .read(input)
+        .split("\n\n")
+        .map(_.linesIterator.map(_.toArray).toArray.transpose)
+        .partition(_(0)(0) == '#')
+    }
+
+    def profile(lock: Array[Array[Char]]): (Array[Int], Int) =
+      (lock.map(_.count(_ == '#')), lock.head.length)
+
+    def fits(size: Int, lock: Array[Int], key: Array[Int]): Boolean =
+      lock.zip(key).forall((l, k) => l + k <= size)
+
+    def p1 = timed {
+      val keyProfiles = keys.map(profile)
+      locks
+        .map(profile)
+        .map((lock, size) =>
+          keyProfiles.count((key, _) => fits(size, lock, key))
+        )
+        .sum
+    }
+
+    (
+      Timings(pre_time, p1._1, 0),
+      Solution(Int.box(p1._2), "MERRY CHRISTMAS")
+    )

data/13.ans

@@ -0,0 +1,2 @@
+35574
+80882098756071

data/14.ans

@@ -0,0 +1,2 @@
+228690000
+7093

data/14.in

@@ -0,0 +1,500 @@
+p=26,88 v=80,92
+p=2,90 v=77,99
+p=43,54 v=-92,-36
+p=96,14 v=-15,13
+p=33,54 v=97,-64
+p=94,53 v=55,67
+p=45,28 v=79,6
+p=64,90 v=-49,54
+p=71,41 v=-9,67
+p=15,37 v=58,-14
+p=43,53 v=9,8
+p=57,88 v=43,-55
+p=37,96 v=-30,-69
+p=35,54 v=-57,22
+p=56,35 v=23,53
+p=84,66 v=-94,75
+p=15,30 v=-43,21
+p=10,97 v=24,-99
+p=88,63 v=21,-54
+p=77,56 v=47,75
+p=83,30 v=38,-38
+p=95,97 v=-2,-91
+p=7,32 v=-1,-42
+p=62,84 v=-66,69
+p=79,66 v=-48,-34
+p=54,39 v=-12,21
+p=87,9 v=-6,-39
+p=66,101 v=-57,-87
+p=47,83 v=-48,69
+p=48,24 v=2,28
+p=71,48 v=-14,-73
+p=25,36 v=40,-66
+p=10,12 v=-29,5
+p=44,10 v=-79,-17
+p=9,65 v=-7,-65
+p=12,83 v=77,-85
+p=70,38 v=-69,-19
+p=60,38 v=-31,-15
+p=98,20 v=7,-38
+p=38,73 v=-61,33
+p=34,32 v=-21,-96
+p=48,44 v=-19,-34
+p=26,49 v=-50,29
+p=79,84 v=82,-93
+p=50,43 v=41,57
+p=9,76 v=-19,-80
+p=81,20 v=25,36
+p=18,19 v=45,-2
+p=36,85 v=-34,89
+p=38,16 v=63,75
+p=45,31 v=-18,-78
+p=7,42 v=-16,66
+p=55,57 v=-77,-11
+p=30,28 v=-43,-23
+p=57,58 v=43,-49
+p=36,57 v=97,-58
+p=7,47 v=-64,-14
+p=73,33 v=26,-48
+p=52,48 v=7,-48
+p=42,66 v=23,75
+p=77,8 v=-28,-82
+p=52,99 v=44,4
+p=27,15 v=37,-3
+p=72,57 v=65,53
+p=59,85 v=69,-54
+p=58,50 v=57,-95
+p=54,73 v=-66,-19
+p=54,64 v=31,-95
+p=91,33 v=53,-43
+p=67,2 v=-5,34
+p=58,65 v=-31,38
+p=65,93 v=62,17
+p=68,59 v=-44,-42
+p=9,27 v=-60,-99
+p=4,73 v=77,-87
+p=88,60 v=18,-20
+p=82,9 v=-96,-9
+p=99,39 v=-11,-24
+p=23,18 v=-56,28
+p=63,101 v=66,-48
+p=4,63 v=-46,97
+p=41,80 v=31,-49
+p=21,25 v=45,36
+p=89,43 v=-2,63
+p=37,78 v=11,86
+p=37,100 v=32,93
+p=77,33 v=-94,29
+p=25,34 v=-12,-81
+p=31,87 v=-30,70
+p=40,37 v=62,7
+p=16,102 v=-82,4
+p=98,45 v=-8,95
+p=60,23 v=-53,-60
+p=12,83 v=-8,19
+p=49,8 v=-70,-39
+p=38,27 v=25,-49
+p=95,25 v=-59,28
+p=42,56 v=18,-51
+p=5,28 v=24,-73
+p=92,73 v=7,33
+p=41,27 v=88,80
+p=78,16 v=18,3
+p=11,80 v=99,62
+p=100,56 v=46,98
+p=97,47 v=20,8
+p=27,6 v=-78,78
+p=45,12 v=-48,-98
+p=41,29 v=-44,-46
+p=84,69 v=-76,-94
+p=89,4 v=-70,-52
+p=40,62 v=-60,72
+p=62,26 v=40,-48
+p=21,55 v=23,-87
+p=80,45 v=-49,-82
+p=28,100 v=23,49
+p=67,38 v=6,-2
+p=66,40 v=17,-44
+p=72,32 v=-85,-28
+p=53,60 v=35,-14
+p=11,14 v=45,72
+p=86,13 v=-36,49
+p=65,88 v=-58,3
+p=97,79 v=72,17
+p=51,55 v=27,24
+p=2,83 v=33,91
+p=78,76 v=-31,-89
+p=83,12 v=86,49
+p=56,93 v=13,19
+p=20,50 v=-38,45
+p=46,6 v=58,17
+p=48,40 v=66,-8
+p=40,26 v=40,14
+p=71,21 v=92,-59
+p=5,67 v=59,-27
+p=65,53 v=-62,44
+p=14,83 v=69,75
+p=95,35 v=-37,58
+p=36,71 v=-57,-43
+p=68,58 v=-97,37
+p=45,75 v=66,61
+p=25,22 v=-75,-66
+p=38,8 v=-17,-83
+p=32,8 v=-8,71
+p=85,78 v=-44,54
+p=48,64 v=53,-65
+p=97,82 v=77,-78
+p=10,32 v=99,-27
+p=84,39 v=8,-21
+p=83,58 v=74,75
+p=67,65 v=48,-6
+p=78,43 v=25,59
+p=22,83 v=23,19
+p=36,45 v=-65,-95
+p=95,51 v=-32,-59
+p=66,5 v=74,78
+p=76,27 v=-42,52
+p=99,64 v=75,-46
+p=51,102 v=44,-25
+p=97,14 v=-41,78
+p=78,56 v=-76,1
+p=77,12 v=-1,-97
+p=58,1 v=13,34
+p=5,28 v=68,-8
+p=30,6 v=31,-83
+p=11,91 v=78,-82
+p=15,39 v=78,-26
+p=32,58 v=84,-36
+p=16,55 v=-36,75
+p=100,96 v=16,42
+p=89,28 v=-6,87
+p=48,19 v=-57,21
+p=42,50 v=-31,15
+p=54,11 v=92,-24
+p=77,98 v=-9,-33
+p=71,36 v=2,60
+p=18,44 v=-55,-66
+p=26,16 v=-62,79
+p=35,80 v=93,-41
+p=90,30 v=29,-96
+p=44,59 v=-26,-4
+p=87,52 v=-43,89
+p=91,39 v=3,-52
+p=35,52 v=49,8
+p=27,60 v=-12,-35
+p=7,18 v=-53,-14
+p=65,67 v=-32,91
+p=13,6 v=19,93
+p=94,28 v=35,33
+p=22,29 v=-38,-78
+p=91,59 v=26,-39
+p=84,43 v=-76,67
+p=29,102 v=-8,-99
+p=84,92 v=-46,-36
+p=56,10 v=-88,20
+p=88,81 v=16,63
+p=19,20 v=-41,79
+p=43,54 v=48,59
+p=11,0 v=28,-61
+p=4,40 v=-94,-82
+p=38,101 v=-18,55
+p=88,18 v=-2,8
+p=13,19 v=28,21
+p=29,11 v=6,-69
+p=76,91 v=16,49
+p=74,29 v=78,74
+p=45,53 v=58,-80
+p=86,11 v=94,1
+p=65,59 v=-14,-6
+p=60,62 v=98,64
+p=57,3 v=48,-32
+p=46,48 v=83,15
+p=54,78 v=58,-63
+p=91,35 v=-19,-74
+p=36,83 v=55,-11
+p=67,53 v=63,-20
+p=20,86 v=-25,63
+p=37,7 v=-30,79
+p=42,7 v=75,-54
+p=76,73 v=14,1
+p=34,57 v=1,-21
+p=31,76 v=79,-44
+p=53,93 v=26,35
+p=60,65 v=-97,-42
+p=99,102 v=-46,-55
+p=65,1 v=-32,-25
+p=86,14 v=60,-61
+p=9,95 v=85,-39
+p=63,86 v=-95,95
+p=4,93 v=94,92
+p=7,81 v=99,-40
+p=28,0 v=28,5
+p=52,41 v=-2,7
+p=14,64 v=-16,-57
+p=22,78 v=-56,54
+p=44,98 v=-88,45
+p=52,72 v=22,-79
+p=63,35 v=13,-52
+p=62,64 v=-62,39
+p=10,53 v=67,31
+p=16,100 v=-69,-63
+p=17,47 v=92,-56
+p=86,22 v=69,94
+p=49,37 v=-79,95
+p=92,96 v=-50,48
+p=54,5 v=-48,70
+p=67,12 v=-76,34
+p=10,10 v=73,34
+p=100,4 v=6,72
+p=1,32 v=-90,37
+p=33,22 v=-8,14
+p=10,96 v=94,-9
+p=84,95 v=-19,-25
+p=42,27 v=66,-60
+p=67,91 v=-76,11
+p=21,23 v=-95,50
+p=53,24 v=-57,-97
+p=19,1 v=47,-62
+p=84,59 v=-5,-2
+p=10,35 v=37,-88
+p=56,76 v=-92,-33
+p=92,83 v=16,62
+p=6,97 v=72,11
+p=65,29 v=4,-82
+p=37,52 v=4,29
+p=78,53 v=39,74
+p=100,50 v=83,-3
+p=43,48 v=-61,8
+p=78,102 v=-22,-99
+p=89,73 v=25,2
+p=91,86 v=7,48
+p=88,37 v=-45,20
+p=80,91 v=81,32
+p=6,6 v=24,-83
+p=86,57 v=3,-14
+p=16,12 v=32,-76
+p=46,53 v=-67,47
+p=79,11 v=-54,64
+p=87,99 v=-35,-7
+p=8,34 v=-37,-75
+p=73,61 v=-70,13
+p=38,2 v=-84,40
+p=92,23 v=9,25
+p=35,60 v=-25,31
+p=72,9 v=16,27
+p=9,33 v=-7,-31
+p=98,17 v=50,28
+p=62,15 v=34,-54
+p=72,4 v=21,86
+p=46,53 v=-39,61
+p=80,58 v=84,-86
+p=83,88 v=-86,29
+p=2,38 v=62,-38
+p=70,61 v=23,-97
+p=100,77 v=-64,-72
+p=27,45 v=58,-14
+p=25,3 v=40,72
+p=73,102 v=-74,34
+p=80,63 v=-58,-56
+p=50,52 v=53,-7
+p=33,82 v=19,99
+p=28,15 v=-52,57
+p=66,43 v=-54,-6
+p=44,40 v=-56,63
+p=31,12 v=36,65
+p=3,41 v=-99,52
+p=35,87 v=-4,-86
+p=79,84 v=-67,99
+p=88,22 v=16,-2
+p=71,85 v=92,70
+p=96,60 v=76,98
+p=38,48 v=14,-7
+p=86,15 v=-33,-75
+p=75,57 v=66,-85
+p=85,68 v=-19,-27
+p=46,95 v=75,48
+p=14,71 v=32,1
+p=74,71 v=-54,-95
+p=11,12 v=-64,13
+p=17,37 v=81,53
+p=2,15 v=23,-3
+p=9,75 v=-39,47
+p=46,70 v=44,-34
+p=86,48 v=-15,-98
+p=32,45 v=62,81
+p=22,3 v=59,94
+p=24,81 v=-82,25
+p=85,11 v=-3,-32
+p=96,86 v=20,39
+p=43,2 v=62,42
+p=45,98 v=-26,-54
+p=51,16 v=92,-53
+p=77,13 v=-45,-61
+p=58,54 v=-44,30
+p=52,3 v=-49,-33
+p=28,76 v=-12,-64
+p=45,38 v=-53,34
+p=11,28 v=85,-67
+p=29,88 v=90,4
+p=44,102 v=-21,17
+p=15,37 v=94,66
+p=73,32 v=30,80
+p=65,86 v=-19,-21
+p=34,64 v=-26,16
+p=60,2 v=-18,78
+p=39,0 v=-34,94
+p=28,15 v=32,-93
+p=8,100 v=98,40
+p=62,62 v=48,60
+p=37,44 v=25,10
+p=39,72 v=-96,91
+p=84,33 v=93,18
+p=81,44 v=69,52
+p=37,22 v=89,-48
+p=0,42 v=-63,-36
+p=35,42 v=-17,-22
+p=90,39 v=-76,-30
+p=55,74 v=-22,-92
+p=1,55 v=-64,-86
+p=60,23 v=-9,-97
+p=21,4 v=-91,64
+p=90,72 v=56,95
+p=35,41 v=58,22
+p=57,81 v=-9,-96
+p=11,102 v=-73,-17
+p=45,58 v=-43,52
+p=43,25 v=48,-37
+p=78,12 v=12,42
+p=48,43 v=79,-29
+p=31,100 v=-30,-54
+p=24,63 v=-61,28
+p=44,67 v=-35,-94
+p=100,49 v=-98,-52
+p=29,54 v=41,-64
+p=29,33 v=50,44
+p=22,40 v=-47,8
+p=56,67 v=-5,75
+p=78,95 v=78,-48
+p=58,72 v=-48,-65
+p=6,94 v=90,9
+p=76,58 v=12,-80
+p=68,62 v=-58,61
+p=62,85 v=57,91
+p=16,88 v=94,-5
+p=72,0 v=-74,-91
+p=0,75 v=11,-93
+p=48,42 v=92,-6
+p=24,102 v=68,-78
+p=21,86 v=-56,25
+p=3,63 v=-11,-43
+p=36,102 v=14,-4
+p=56,52 v=4,-58
+p=5,55 v=-1,84
+p=92,1 v=-94,-84
+p=27,50 v=54,-88
+p=80,91 v=-76,33
+p=50,19 v=9,87
+p=69,37 v=-58,-8
+p=34,63 v=14,61
+p=17,52 v=19,37
+p=93,65 v=-15,46
+p=37,15 v=-13,56
+p=100,63 v=-68,17
+p=41,81 v=97,-92
+p=62,17 v=-72,13
+p=0,16 v=-77,-31
+p=14,17 v=41,28
+p=27,34 v=58,-74
+p=35,40 v=14,21
+p=8,88 v=-24,98
+p=35,28 v=-94,46
+p=93,42 v=-59,22
+p=83,26 v=-11,1
+p=2,22 v=-42,65
+p=35,102 v=-25,-4
+p=21,22 v=41,-81
+p=35,0 v=5,41
+p=70,99 v=74,34
+p=75,28 v=4,81
+p=11,91 v=-56,33
+p=16,52 v=65,-38
+p=55,14 v=-66,78
+p=39,68 v=-71,7
+p=25,53 v=-56,-29
+p=70,42 v=-33,-35
+p=40,81 v=-70,47
+p=15,78 v=-82,26
+p=85,97 v=51,-33
+p=78,72 v=43,-48
+p=92,60 v=-77,10
+p=55,65 v=-14,-79
+p=46,45 v=92,-72
+p=15,54 v=-3,-51
+p=65,2 v=-80,-70
+p=73,30 v=78,-74
+p=23,12 v=-64,-98
+p=85,3 v=-68,-11
+p=30,69 v=-21,69
+p=57,38 v=-18,37
+p=11,88 v=-82,-19
+p=55,101 v=-54,44
+p=68,56 v=57,-65
+p=4,81 v=-12,92
+p=43,70 v=62,-27
+p=42,25 v=-31,13
+p=0,61 v=-16,-64
+p=45,25 v=31,-82
+p=23,75 v=-47,92
+p=57,33 v=-30,25
+p=0,34 v=-94,-36
+p=78,57 v=34,-43
+p=67,99 v=-22,4
+p=3,46 v=-99,8
+p=44,28 v=80,-66
+p=84,60 v=72,18
+p=51,66 v=-88,67
+p=38,7 v=-61,-47
+p=34,23 v=40,-88
+p=66,46 v=83,-81
+p=73,98 v=51,33
+p=37,56 v=62,81
+p=30,98 v=28,58
+p=71,99 v=38,62
+p=64,7 v=52,86
+p=26,53 v=-12,89
+p=87,50 v=43,-29
+p=65,101 v=87,-96
+p=34,52 v=-21,66
+p=14,84 v=-60,3
+p=4,7 v=-50,49
+p=45,73 v=-17,-64
+p=18,92 v=-29,40
+p=83,54 v=2,-64
+p=95,26 v=60,50
+p=86,80 v=95,25
+p=5,52 v=-25,15
+p=99,98 v=-46,77
+p=81,52 v=25,9
+p=53,89 v=-54,-83
+p=60,36 v=92,73
+p=78,27 v=7,15
+p=55,51 v=-63,-74
+p=5,85 v=-56,-97
+p=26,17 v=6,46
+p=37,36 v=-67,51
+p=69,52 v=96,67
+p=24,86 v=-11,35
+p=44,1 v=-21,26
+p=55,95 v=61,-33
+p=75,101 v=65,-3
+p=16,17 v=-29,29
+p=80,69 v=12,68
+p=78,61 v=-11,-7
+p=99,99 v=11,-62
+p=41,47 v=47,-86
+p=52,81 v=31,54
+p=86,60 v=-37,16
+p=15,89 v=-43,-18
+p=72,99 v=12,26
+p=42,15 v=-13,-47
+p=37,79 v=-41,70

data/15.ans

@@ -0,0 +1,2 @@
+1294459
+1319212

data/15.in

@@ -0,0 +1,71 @@
+##################################################
+#O..OOO.O.....#O...OO.O...#O...##....O.O..OOO#.O.#
+#....O.O..O.........O...O.......O....#.O.O.#...O##
+#O..O..OO.O.O.........#O..O...O.....#...OO...O...#
+#...O.#.O..#.O..OO...OO..O....O#......O...O......#
+#...........OO....OOOOO.OO.OOOO...O...OO....#.O.O#
+#..O.#..OO...O.O#OOOO.O.O....OO.....O.O......#.OO#
+#O........O...O.....O.....#.O..O.......#..O.#...O#
+#...........O..#.#.....#......O.....O..O....OOO..#
+#O...O...OO...O.OO....O#O...OO.O......OO..OO...O.#
+#...O#...OO....OO..........OOOO.O.OO.O#.O....OO..#
+#..O..O.OO.OO.OOOOO....O..O..OO....O..OO....#..#.#
+#..O.O.O#..OOO....#..O.O.#O#..O.O.....OO#O.O.OO###
+#....O..#.....OO.O.O......O.....O..OO.O...O.....O#
+#O.#O..........O..O.....O....O.OO...O....O..#..#.#
+#........OO...........O#O...O...O.O.......O.....O#
+#.........#....OOO...O.......OOO#.......OO....O.O#
+#OO..........O.O....O..O....O...#O.O....O.....O#.#
+#.....O.O.#O#..#.OOO.O..#OO..OO.....#.O......O...#
+##.O.O.OO.OOO....#OOO.#...O...O.O...OO.......O.O##
+#O..OO..#..O...OO.OO..O..#.#.O..O.#O..O.O....OO..#
+#.O.O...O.....O.....OOO.......OO.O...O.#.#O..O.OO#
+#OO.O.OOO..O.O..O.O..O..O....O...O...#OO.O.......#
+#.O.....O.....O#O.#..O.......OOO.....#...O.O.....#
+#O..O.......#.#..#...O..@.O..OOOO..O.....O.OOO...#
+#OO........#OO.....O.O.#...O..O..#.O...O#.O#.....#
+#.OO..#...OO..O........#.#.O#..O........OO.O..O.O#
+#.O....#.O.O.#....OO.....#.O.O.O#.O.O..##.....O.##
+#......O..O....O.....O.O.#O.O......#O...O#OO.#..##
+#....OOO.O.OO..............O##...O#O......O....O.#
+#O.....#.O......#..#....O#O.....O..O.#.O..#O.....#
+#...........OO....O.....O#......OO.#OO..O........#
+#O..#OO.....OO.....OO.....O........O.............#
+#...O.O.O.....O...O.O.O.........O.#...O....O.O.#.#
+#OOO.O#..#......O...O.O##O..O......#.#O..O.......#
+#................O.#.......O.O.#....#.OO...#.....#
+#....O....O#OO...O..O...#O...O....O.O###O#O.OO...#
+#OO..O.O...O.......O#.O....OO.......#O#.O..OO..#O#
+#...O.O...OOO..O......O....O......##.#.O.......O.#
+#....O..O..O.........O#...........O.O.O...O.#....#
+#..#..O.#.....#..O...#.#...O..OO...............OO#
+#......OO#O.OO.......#......OO........O#.....OOOO#
+#..OO.#.....#.O.O.O..OO.O#O.O..OOO#O....O....#...#
+#...O......O.......O..O.OO...#........O..........#
+#...O....O....O...........OO#.O......#..#O..O...O#
+#....O#..O#.#....O....#.O...OO.O..#...O#........O#
+#...O.##....O.O..O..........O.O..OO.#O#...#O..O..#
+#.O.O#O##.O.O.....OOOO..##.O..#...O.O..O........O#
+#.....O..#....#.........OO...........#.#.O....O.##
+##################################################
+
+v><<vv^^v<vv>^<<>v>^<<>v>^<^<><<>><<>v^>><<<v>^<^v<>^v^>>v^v><>>^v<^>^^^^<vv^<>^^>v<^<>^<^>^v<<v>v^>vv<v^^<^>^^^<^>>>^>v^^^v<>>><>vv^<><vv<v><>v>^^>>>>^>><<v<><<<<^^>><^v<^^>v<>^>^v<>>>v>^<<^>^vv^<<vv<^^^v^>^>v>^<>vv<<^>v^v<>v^v>>^^v>^^v^v<<<v^>>><>>>v^v>vv>>^^<^^vv<^<>>>vv<<^<>v><^<vvv>^^^><vv<<vvv<<^>v<<<v>v^>>>^<>v><v<v^^>>^^<^v<>>><<<^><v<^v>><<>^^<v>><<^<>v<>^^^<>^<v<<<^<v>v>v<vvv>>v<v^>>^>v><<>>vv^>^v>><v^>><<<^>>>>><>^<v<<><<<<<<v>^><>>>^^>v<^<v<<vvv^>^<>^>>>v><><v<<<v<<><v<v<<>^^<v^v^>^vv^v>v<v^^^^v^<<>>^^^v>>>^v<^v<<<<v<>^<>^>>^v<^>><>^>^>>v^>vvvvv><<vv^>^v><<><v<^v^<^<v><v<<^<>^<<v<>v^^<<>>><<<v^^^^<^>^^vv>^><^<^>v^^v^^<v^>vv^vv>v>^v^^<v><^<<<v<v^v><>v<>^<<v<<<^>vv<v^^>>vv<<^<>>>^^>>>^vv<v><>v<<>^>v<v<>^v^^^v>^v^v<^<><^v^><>v^>^<v>>>><<<^<vv><<><v<v<^<v<>v>^v<^v<<v>>v^^^^>^v<v<^>><>><v>>>^<^<<><<v^<^v<>^vv>>><^<>v^<v^vv^>v<><^^^^<<^<><v>v^>>>^^v^v^<<<^><^^vv^<^>^vvv>>^<<^^<^v>><><^>vvv>>><^>>^<v<<<v^<^v<^><>vvvv<>vv<^<v^<>^v>^^v<>v><>>^<<v><v<vv^^<<<>>v^<v<<>><^>vv^>^^>v^v^v<
+>v^^<<>^^><<v<<vvv^>^^^v^v<>v<v>^v^^vv^v>>v<>>^><<^<v>>>^^^^vv<v<<<<>^<<<^vv>vv^><><vv>v>v>>v>^v>>v^v>v><^>>v><><v<>^v<^>^>><>^>vv>^<<v<>^<^^<<>^><<<<^>>v<^>^v<<<^^v^><v<^>><v><>^^>v<^v<v>^>><<<<^<<^^vv<^<v<<>>v>v<^^<<v^vv<<>v^>^<^>vvv<^^^v<<^<v><>>>vv^>>vv<v^>^^>>>v>^vvv^><v<>>>^><^>^>v>^v<v<<<v><^vv>^v<v^>v<v^^v<v<>^vv^<<^^v<<v>vvvvv<>^^<v>v<^vv^v^>^vv^>>><vv^<<^>v^vvvv<<><<<vv<><<v<vv<v^v<^>>^><><^>^v<<^v>^<<>^^vv><<v>>v>v<v>^<v^>^<^v>v^>v>v^^><v<^<^v<<v>vv>v<><>^<<^>v<^>><<><vvvvv^v^<>><<^v<>v<v^^v><<>^^v<<>v^>^<v>>^v^^><<^>>><<^<><v^^<^><<<><vv>^v>v<vv<>^v<^<vv^>^v<<v>v<v<v>^><^<<<<<<v><v^<v^>v<<vvv>>><<^v^^><>><<<<<^<>^^vv^>>>vv^vv^^<^^<vv^<^>>^>>vv<v^^<<><^v^<<>vvv^^v<vv<^^><^><>>v>v><>>><>^v<<vv^><^>>^v<^v<<^^vv<>><v>v<<>vv>>>><>><^^^v<^v^^vv<v>>^>^<v>><>vvvv<v>^^<^^v<<<>^>^vv>v<<<v^><<v^v^>v>><v^>^v^>v<>^^<<>><<>v>>^>>^v>^>^vv>>^<><v<<v^<v^<^<>^v<^^<v>>^>v^v<vvvvv^v>>>^^<v^>^<<v^^v>^v^<><>vv<^>vvv<^><^>v^v<^><^^<^v>^<v^v<><>v^>v<v<>^>v<v^^<v^^>^><>^>>>><^<>vv<>vvvv><^v^^<^<<vv
+^^^>vv><>>v<><v^>v>v^v<<<^v<^^><><>v><^>v>v^<<<^>^^^^<^^>^^v>v<>^>^>><^>>>v>v<<<<>v><^^^vv><><<^vvv<<<^<v^^<>^v><><^>v^v^vv<<v^v^^^^^^^>>><v><v<v<v^<<v^v<><vvvv^><>>^><^<v>vv^v<>^vv^^v^^^vv>>v<v<^v<^^v>^^<>^<^<^<>^<v><><<>vv<<v^><^^vv<v<<<^<^>^><vv<>^<>vvv<><vv>^^^v^<><^^^vv^v^<<<v><^^v^<>^^<<<^<><>^^^^>^^<^>^vvv^^<<^>v^^^>>>^>>v<v^^^>>v>>v>^><vv^<v>vv<^><<<>vv^^^<^^^^^><<>>^>^v<>>^>vv>>v><v^^vv>^^<>^<<<v>^^<<<<>>^>vv<v>><><^v<^>^>^v>^v^>>>v<v<<^>v<><v^v>>vvv<>>v<v^^^>^<><vvv<<<vv<^v^<^vvv<^^<^^>v^>^<v<>>^v^>v>>><v^^><<v>v<>^v><<^><>v<>>^^^>v<<<^>>><>v>v<>>>v>^>v<^>^>^^^<^>v>^^>^v>vv<<<v><^v^^>^><>^><^><>><<>>>^<<>v<v><>^v^^v^><v>><v<^<<v>><<<^^<<v<v<>^v^<<<v^^^<<>^<<><vv<v>>^vv>^vv^><<^><v>^vvv^<^v>^>^<v<<<^vv<<v<v^^v^^^v^vv><<^^vvv<><>vvv>v<^v^<vvv<<<^^v><v^^<>vvv<>>v^<v^<^^^v>^^v<<vv^>^<v>^<^^>^>^v>>><v<^>><^<^v>v^>v^>>>v><vv<<<v<^>v>>^<<><>^<vvv>^^<^^>v>^><>>>>><<v>>v<vv<<><^<><^<>^v>^>^>v^v>v>^<^v><<v>>v^>v<><^<^^^><>v^><<<v^^><^>v<^>>>^><<>v<^>^vv<<>>v^v><>v<>^<<>^vv>^>v^<^vv<<<>
+<<v^v>>>^<v^^>>>^><^^>v>>>^v><v<<v>><^<<v><<^<><v^><<^vv<<>>>^v<v<^v^^>v>v^v^<^>><<<><><^>>><v<<<<>^>>^<<<<<>^v<>v<^v^>>>><>v<^^v^^v<<>>^^>^^^<^<<^<v><<v<v><v<>><v>^^^^vv^v>v<vv>v<v^>v^<<><>vv^^^^>v^><<^^^^v<>>^<vvvv^vv^>v^^^<^>v<v^<<<^>^<^^><>v>><v>^<v<>v<^^v^v^^<>>><<<<v<v<^^vv^v^<>v>^<v>vv>vvv^^<<^>v<<v><^<v^^<<v><^^<<>^^^v^v>^^^v^v>v^<>^<^^vv>^^^>^^^<^>^v^vv><^v^<^v><<>>>vvv>^vv<>^>>v^^^vv<^<>v^^^v>><>>vvv^v<vv^^><^^vv<v<v>v><^^><<v^><^>><vv>v>^v^v<>^vv>^><<v^>^>^>^>^>^<<>><^>v<^>^v>v^>v^v<<<<^>^>^v<<<<><v><>^>v>v>vvv>>><>vv<<<<<vv<v>v>vv^<<^v><><^>>><<>v>v<^<<>>^><<><>^><^v^^<vvvv^^^>v><<vvv<<>v^^^^vv><<<<><>^>^<>^><^<<^>>>^^^>^^^v^^>v^^vv><^<>>v^>v^^v^^^^<>^v><>>^v^>>^^>^>><v^>^v^v^>>>^^^<>><v<<^<^v<v<vvvv<v>^<v<^vv^<^>^^>v<><^>><>^v>>v>>^>^v^v><>>>v>^>^^vv^<v^>v^v>^>^<><v<v^<v>vv<^<^><^v>^^^<>v<>><<>><><>^^<><<<<<vvvvv^v<^v^>v<><<vvv>>^<<<vv^<<v<<v>>^^^<<vv<>>^<><>vv>v^^^^^><^<<v<^>>^^v<>^v^v^<>v^><v^<^<vv<vv<<v><<^vv^v<<^^>>^^><vvv<><><^v>>v^^<<v<><<>^^<^^<>^v<v^<^^^>vvvv><v<^>
+vv>^<>>^<^v^^^v>vvvv<<^^<v>v>^v^v<<>>^>>vvv^^<v^vv^v^v^v><vv^^^<>v>^^>><^><v><^^<^v^v^^<>>v^>v>>^^^^<<<^vv>>v>>v<v^^<>^vv>>v^^v><<^^^>vvv<>v<^^>^>^^><<>><<<<>v<><v^v>><^<^><^v^<v^>>v><^><>v^^<><^^<v<vv<>^<<<<>^<^<vv>><^><<<v>>>^<<>>v<<<<><>^<^^v><<v<vv^>^>vv^v<>>v>v^>>^v<^v>><v<>v<^^^^^<^^^^<v^vv<^<><>v<v^v>v>v^>^^>^^<>>v^v^><>vv<^^^^v^^^><^vv>v^<^><>^^v^>>^^>>v<<v^v><vv^>^vvv<><v>><vvv^>><<>><<v<v^^>v>><^>vvv^^^^<>vvvv^v<^>^<>^><<<<<>^<^v>vv^^>>v>>>>>>v^>v<>>v>v>^v>v<v>^^>>v>>>>v<^<^v<v><vv<<^^<><vv^v<v>^^^>>>>vv<>^v<<><>>^v^>vvv<<>>v<v>>v<>^<>^<vvv>><<<v>^>><<^<vv^>>>>^^v^>>><^<vv<<<v^><<v<>v^^vvvvv^>v^v<^^^v^^<<v<v^v^>^<<>v^^^v^>vv>^>^<><<^><^<>v>v^^<<<^v>v<^<>^<<v>>^<>v<^>>><vvvv^>vv><>>v><>^<<>>v<v<<v^>><^<^^vv><<>v><^<><^v<>^>^^^<vv>^v<^v^^vv<v>^^>^><v^^>^<^<^v<<^<vvv^<v>>^<<v<<<><<<v><>^<>^<^v<^^<>vv>vv^<>vv<^v<^<^^><vv>v>^><^>>^v><^v^><>v>^>^^vv>vv<<<<<v^v^v^>>^>^<<v<^v^<v>v>>>v>>vv>>^<<>^v><<><vv><>v>>><<v^><<>>^>v<<<^<><<v<v>^>v^v^>><<<v>^^>^>v^^>>^v>><^^v>vv^>v>v>v>^^<^>v>><
+>v^>vv<^vv<v>vv><>^<>>>>v<v<><v>>v>>^<v^><>^^^v^>vv^^>^v<<^vvv^<>>^vv<>^v<v^>^vv>>^>>^>><^vv>vv<<<v><>v<^^<v>^<^v<<^v<^>><^^vv<vv><><^^<>^^v<><^>>><><<^<^<^<>>vvvv<>^>v<^<>^>>v^><v^><<>><>v<v^<vv>><^<v><^<<>>><>vv>^v<<><v<>^>>>v<^^><^v<v<^>^v><<^^<v>>^v>v<v>^>^>^vv<^^v^^<^^>><^>>^<<vv<>^><v^>^^>>>^<>><^^<^<<v>v<^^^v<>>vv>vv<v^v>^<^>>v>>^<<^<<<<v<<>^v<>>v<<^^v>><^<<^>>v^<^v><<>^v<>v>^>>^v<>>^>^<<^><>>>^<>^v>^v^<v>>^<^^^v>><><v^v>>^^>>vv>v><^>^^^v><vv<^>>^v^<^>v><^>v<<^^<<v>>v>v^^v^<v<v><^>>><v^>>^v>>v>v<^<>^<<>v<vv<^^v<>v<vv><<<><^^<v><>vv<>>vv^<^<>>v^>v<>^>><<^v<><^>>><><^>^><>>>v<^<^v>>><^>v<v<v^>^^v>v^<v>^><^^>^>v<v^>>v><>><^v^>v>>>><>^^v>><^<>v>^<>>vv^v>^v^><v^v^>^v><>v>>><^^>v^<^v<^>>^>^><><^<^>^><<>><^v><v>^>>>v><<><^v>^<vv><v<v>^>v<v<v^^^>v^><>v>v>v><^v>>^v>>><^^^<^<<>v^^>vv^<<><vv^<><>>^vv>v<><v>vv<><^>^>><><v>v<>v>^v^<vv>^>>><>v<<^<vv>v^<<^><>^v<v>v^>>^>^>^<<<v^v^v<vv<^^>^<>v<v^>>>><<^<v>^v<^>^>v^v<<<<<>>>^>v^>>><<>>^^^>v><><vvv><^>>^vv<<>^<^^v^^vv>v><v><v>^<>^>>>v<^^<vvvv>>>^<
+v<<^<v><^v<v>vvvv>v<<v<^v><vvvv>^<^<^>vvv<>^^<><^<^^>vv^<v^<<^<^^v<v>>v>^>>^v<^vv^v^>^v^v>vv><><vvv<><^v>>v<<^v<v>v<<v^<^<<^>v^v>>^>>^v^<^><^<v<<v<>vvvvv<>^<^<>>>^^>vv^<<<^>><^<^>^^<<<<v^><<<<^>^^<<<>>>^>><>v>^v^^<^^>vv><vvv>^v<<<>>v<>v^v>><^^<vv<>^^<>>>>^v<<v^^^^vv^><<^^^>^v^<<v>^^v>vv><<v>>>v^v>>v<^v<v><vv<^vv><<>>^>^^><>^>><>>v^vv<vv^<<<vv<v>><v^^>vv<^>^<^<<<>^<^>^^>vv<v<v<<^<>v^v<><vv<<^vv<<v>^v>v^v><v^vv^<>v<^<<v<<><>^^<<<>v^<<>v<^vv^>^^<v^><>v>v<<v>v<<v>^<vv<^v^>>>>v^v<v^^<v>>>>v><^>v^vv><v^^>v<^>>^^vv<v^><v<>>^v^<<<vvvv^>v<<^<<^^v^v>vv>v>^>v<v^>vvv<<<>^vvvv<^vvv>^<v^><<>vvv<>v^>v^<>^>><^v<v^^vvvv>>^v><^^v>v<><vvv><<>^v^<>><^><^>^<<vv^<<<vv<v<>v^^^v><^><^v<<v><>v<^><<v^><><>^v>vvv<<v>><<v>>v<<v<<>v^<v^<>v>vv><>v<v<>^^^<<<>^><<v>v>><^v>>>^>v<v^<<^>^<<>^v^^vv<<<>vv>>^><v<<>><vv^>>^<^<>v^^<v<<^>^<><>v>>^v>^vv^>><>>>^^v^>>>^>^><<v>>^>v^>>><v^>>vv^v^>>vv<><>^>vv^^>vv>>v^><>>v^><>^^<vv^^^>vvv^>v<>><<>^v<<>^v^>><<<^v>^v>^vv<>><^v<><v^vv<>^v<<<v>>v>^<v^v>v<<^v<><^^<^vv^<>^<^^<^<<>><vv<^<
+^>>^>>^<<<^>^><<v^>>^>v>><v>v<v>v<^<^v<<^<>v<>>>><<<vv^v^^^^>^v>>^<<<^^><>v<><>v>v<>^<v<<^v>>>><vvvvvv<><<><vv>>><^vv>^^vv>v><^^^v^>><>^<v^v>v>>v>><>>v<^^vvvvv^^v^<>^v><v^>><<^>^v^<<>>>>>v>>>>^^^^^^v<^<v^<vv^><vv^^^>v><v^<><<^^>^^v^<<v>v^vv<^<<<>^^>v>><^>><<^>^v<<><^<<>v^v<^^^<^<>^<v<^^>^v><>vv>>v^^>>>^<v>>v<>><^v^><<>>><<>^^^<v<<<><<<v<^v^<<v<^>^v^^<^v>^vv<>>v><^v^>^>><>>^v>^>v^<<>>^<<<<><>^>^vvv<<^^^^v<<v^v<^<<><v<v^>><>^<^^<<<><>^^^^^v>>vv^v<^^<^<v<<v^<>vv^<<<^>v<>v>v>>>^<>^vv>^v<<<^^>^<^^vv<>>>v<vv<vv<>^>^>>>v>>^^<<vv^<<^vv<^><>^><^<<v<><^<<<>^v^<>v^<vvv>^<^^<<v<v^<>^<>v^^>^>vvv<>><<^>^>>vvv<v><^<^<>><>^^<v>^v^vv>vv^>vvvv>>vvv^><>v^v<<>>>^^>^vv<^^<<>v><v><<^>>v>><vv>^>vv>v^^>^><<<<><v>^^<v<>^<^>>>>>^<>^<<<v>^<<<v<^<<<>>v>^v>>v><<^^<v>v>v^><v>^>v<^<<v<^<^<vvvv>>vv<v<v>v<^>v<^v<>v^>v^v^^<>^>^^<>>>^<>^>vv><>>^<^<v^v^>^<^v><<<>>v>v^^^><>>v>^v>><v><^v^v>v<vv><v<<>v^>>v^><^<<^v<^>^<v>>vv<><<^<<vv^>^<<>><>v^<v<<<>vvv^^vv><>><<>^>v^><<>^^><^v<>><<<>><>^vv<^><vvv>v>v<v<^^v>^vv^<<^>^>v>v>vv>
+>^<v>^^^^>>>>^<<>v^^^v<><>>v^^<<<<^>v^>>v^<>^<>><<v^<v^>^^vv<>^<^>>v><>^v^^><^>>^<<<^^>^v<^^><v<>v>^>vv<^vv>>vv<^v>^<><v^v<<>>>^^<>><^<<v^v^v>^><^<>><v^v>^vvvv><<v<^<><^^^v^>>v<><<<><vv>vvvvvv^><<><^<vv<^>>>v<<v<^^>>vv<<<^>^>v<^v<^><^vvv<^v^v^^v^<<><<><<v^<^>vvv^v<>^^v^v^^v>>>^v<vv>^^>^>^^^>v^<^v^^<>vv^v^^v>^><v^^v<vv>vv><v^v>v<>vv^<^<^^v^<v>v>>v<^><<<v<><<^>^><v^<^vvv>^v>v>v<v<vv^<v>><v^vv>><<^^<<<v<v>^v^><^>>>><^>vv^>><>vv><<^>vvv>^>vv>>^^>vvvv><><<><^vv<>v^><v^v<vv>>vv<<<<<^^^<^>^<><v>^<^^v><>^v><>><>v<>>>v<v^<><>^<><<^v^^>^>><><<^<>>>vv<>^^vv^<v><v<<^^<^>^^<>^>>>v>v^^^>^v<><<>v^>v>^>vv^v>v>v>^^v<<<<^<^><^<<><^^^^^^>v^<^>v><>v><^^>><^><>v<<vv>^>^vv>><<<>v>><^^v<<><>^v<>vv^^<><<v<>>^v<^><<^v^vv^v>^^>>>^<^v><^^><^^v>v>><<><^v^^>><^v>v>v^<<<v<v<<vv^v<^><v>>vv><<>^^>^<^<^<>v<>v<vvvvvv<<^<>>v^^>^>>^><><><v>^>v^<^v<>>v<>v^<>v>>^>^v^<^^<v^^v^^v>^<^v>>>>vv^<v<^>^^vvv>>^<<v>^<><>>v>^>>^v^^>^v><>^<<^^<v^<<^>^<^v^>><><^>^>v^v^>^>^<<<^<^v>v<>v<v<^<>>^<><<^<v<v<v^<>^^>v<^^v^>^vvvv>vv<^>^v^<v^<><
+>^^v>v<>>v^v><^<vv<>>v>><><>v<^^><>v^^<>v^<><v>>^<v^<>v^<>>^<><^<><v^^^^^<<^v>^><^>^v>v<<>>>><v>^><vv^<^v^^<<<<v><<><v>>>><>^<v<<<v<>^<^v><^^^^v^vv<^<>^<<><v^>^<<^v^v<^<<<vv^<>v<^><>v^>>v^v^>>^^^>^>^>^<<><>^v^v>^^v<v<<v<>^v>v<vv^vv^<^<v<<>>vv^<vv<^<^v<v<>>^>^^^v>^>><^<^^<^<<^<vv<^vv><<<^v<^><>^>^vv<<>vv<<v<<><<vv<^><^v^^<v<>^v>>v<v^<v<v>^^v<^^^^^>v>^v>^<v>vv^><><^>>v^v><<v<^v<><^v<^<^>vvv^><^^v>vvv>v<v<^vvvv>>>^><>>^^^>^v^^^vvvv<vv>v<v>^^^^v<v^vv>v<v^<^<<^<^^vv^<^v<>^v<<>^>^v<v<><vv<v^v<v<v<<^<<>^^<v<^><>v>^^^^v>^<v^v^v<^><>^><<^>><^><v^>v<^>v>^v<^^>^<^><^>>v<v>^^<^^vv<>vv<<>v<<^<><>^v>^>^^>v<v>v^^v>><>v<<vv<v^^^>^v>v<>^<v><<^<<vv>vv>v<v^^>^>>vv<v^v^><^>^^>v>>v^>^<v>^^<v<><^v<>>^<<>><^<^^vvvv^><<^^^^<v^v>v>>vv>v<>^vvvvvv<^>^>>>vv>vv<<<<<>>>^<^>v<^^^v<v>v^v^v>v^<^<v>vvv^><>vv>>vv>^^>^>^>v^^^^v^v>><v^v<<v<v<<^vv^<>^^<><<^vv^>>v^^^>>v><><>^<^^^v<v<^v<>^<<^>vv^>^^>v^<<v^v^v<vv>v>vv^^v^^>>>><<<<v<v^<>vvv><><<<>v<<^>v<^vv<<vv<><^v<>v^><>>>^^^v>^<<<>>>^<<^v><<<>>>><^^<<<<<v><<v><vvv^^>^>vv^vv
+v><><vv><><^v<^<>v>^v>><<^^^<<>^<^^<v<>>v<<<>><<><v><>vv<<^<^^v^^^^<<^^^v^v^^v>^v<^^<<^^>vvv>>^<>>>^^^><v>^v>v><>^^>vv^<v^<<><>v>v<<^^>^^><vv<v^<>>><>>^^vv<><<<^<v^<vv^<<<>vvvvvvv>^<<v<^><^<>vv>>vvv^v^vv<><>v^<^<v^>>vvv>^<v<^v<<^v^<v<^<v<vv<v><v^<^>vv><<<<><>^^><<><<><<v<>vv>^^><<<<<^^^<>v<^>^v^v>vv^v<v^>>v<<^v<>>^>^<><<<^><>><v><>v^>v>^v^v^v><^<v<v^<><>v^vv^><vv^>vv>^^>^^<<<v<^^<>^<v^>>^><v>v>^v^>v><^>v><>^>v^vv><<^v<>>vvv>vv<>^v<<^vv<v^^<v<v^vvvv>vv^^<v>v^v<><<vv^vvv><<>^^>vv<<vv<^<<><<^<<<^^<v^>v^>^^><>^^v><><>v^v<v>>><v>>^vv<<^^>v<^^<<v>^><>>>>v<<<v>^>^^v><<^v>>v^>>^>>><<v<^v<<^^v<<^<^>><v>>><^>^<<^<<>^^>^^<^<<v^<^^<v>^v>v>v^>^vv^<>v>^^v^<^vv<^>v^><<>^<v<vv>v^<<<^<v<<>>>^v>>vv>>^>v^^>v>><>^<<<^^v<^><><>^>^>v>>v<<>v><vv>v^^v>>v<^^^vv^vv<<^<v^^<v^>^v>^vvv^>>v<<><<v^>^v^>>^<v<>>v<<>>^<>>v>v^v<^>>><v>^<<^<<<<v>vvv>^><<>>>v^^^>>><<vv<^>v><<<^^v^v>>>>^<<v<>^>>v^><<>v<<^^^vv<^<<^v<><v><<<^v>v<>^^<v><>v<<<^vv^>v>v^^^v^vvv>^^<v><v^>>>v^v><^>^<<^><v<^^<^v>^>>>><v^>><>v^>>^^^^v^<>><><<<><<v>>
+<<vv^v><<v<^v<v^<<><^v<^<<<v<>^<vvv<<>v<>v^><vv>v^^<v^>>^^^^^>^<><<^^v^<>v><>^v<^<v<v<<<v<><<^>^^><vv>^v^^>v^^<<v>>v^vv<v^<v><^v>^^^v^^>^<><>^^<v<^v<>>vv>v<vv<<>^>>>v>v>v<v^^v<^<<^v>vv^>v^^^>>>^v^v><^^<><<><<^v<v><^v<>v^v>^^>^^>^^v^>^^v>^^<vv<<<^^v>^v<><v<v<v>^v^^^vv>><^^^^v>v<>vvvv<<><^v<<>^v^<^v<<><v^v><><v^<<^>>><>^v^<>^<^v^vvv<><<>^^^v<^v<>>^v^><<>v>v>^v>><^>><^<^vv>>vvv^><^v<<>^vvv^><vvvv^<<<v>><<<<><^v<>^v^<>^<<<<>v><>^v>^><^^^v^^>^^<v<<>^<^^>vv>^v>v>>>v^<>>>v>>>>^v>>^<v<<<<v^><><>^<^v>^<<>^<^^>^<^><>vvvv>^<^><<<^^^><v^<^>v><^>v<v^<vvv^^>^><vv>^>>v^<<><vvvv>>v<<v<v^v<>v^v<<vv^v^v><>v^^<^v<<^<v^>>v^v^<>v><vv<><v>^v<<<>><<v<<^^v<v^<v<v>><v<^>^<>v>v<<v^<v<v<<v><^<><>v<^v^<^^v>v><v<v<vv^<<><<>^>>>>>^v><^v<<^<v^^v^<<^<v><v<<^>>v^^>v<>v^^><v><v><<^>>v<<^v>^v^>^>vv<<<>>^<^>v>>^><<^^<<vv^^>>vv^<>^^<<<^<^^v^v>^<vv>>^>^><<^>^><>^v^>>>^<>^v^<vv>^^^<vv^^<<>^^>v^><<>vv^vv^<^v>^^<>^^>>^<^v><<^^>v^<^^<vv^v>>v<vv<v^>^v>>>v^<><<>>v>>>v^>>v^>^^v><<^<v><^v^<><>v><<><<^<><<><<^^v^<v<>^>>v<><^>v><><>
+^>^>vv^^v^>>v<^<v>vv>v<v^v<v^^^^v^^<<v<>>^<^><<^v>^v>v^><><^^v<^^^>vv>v<<^<>>v^<>^v<^^^><v^<^vvv^v^v<v<v>^^vv>^v^^>v<><>>v<<^v<<<vvv>><>><<v>v^^vv^^><<<^>^v<vvv<v<vv<^v<v>vvvv^<^><vv><^>^^v>>vvv<>v>>^>^<<^<^^<^^>>^>v^<>>v><^>v>^<v<<^>v^<>^v><v>v<^<^v<vv>v>v^<v<vv<^v^^vv<v<<^><v>v<v>><^>^<vv^<^>>><^<^vv^^>v^^<><<v<<<<v^^<v>^vvvvv>>^^>v<v<^><^^^<^<>^><^<vvvv<<v^><v>^>vv<>v<><>>>><^^^>v^><<vvvv^^v<>^>v<>>^vv>>v<<^v^<><<^^><v^^vv<<>><<<>v<>vv>>>v<><>>v>vvv<>>^^<^^>><^^^^><<<>^^<^<^><^^<v>^^^>^<v<^^>>v<<<>vv^<v<^^>>>^vv^vv^v^^^vv<>^>^<<<><><<<<^^^^>^v>>v<<^^<^>^^>^v>v<>^^v^>v>^>v<<<v<<>^><vv^v<^^v>><vvv>v>^>>>>^>^>>>v^<^v^vv<v^v<^v>^v^v<vv<>vv>>><<^^>>v<<v>v^>>^>v^>^><^^>vv<^>v><vv<^><v><^^^<v^>vv><v>>v<>v<^vv<v<<>^<>v<<^<v^<<v><^v^<<<>><<>v^v^v^><<>^^vv>v>vv^<v>^>><>^>^vv^^^>>>^^><>v^^v><<>>^v<^>><<<><^<v^v^^^^^<<^^><>^>v<<^><v<^v<>^><^>>>><<vvvv<><^><v<^>vv^^<v><<>>v^v^>>v><^><>^>^vvv><^><><>vvv<v<^^^^vv^^v^<<^vv^<^<^v<^v<<>v<v><v<<^><vvv^<^v<>v>v^<<<<^>^><<v<vv><^<<v<<<>>v<>^vv<>>>^vv^^^
+vv<<>v>v>^^>v>^<^<v>v><>v^<^<>^<^<^<>>^^v<><><<^<v^v^<^^<^vvv^v>vv^><^>>>^^>>>^^>v<><<v^v^>><v>^vv>v^^><>v<^<vv<<^^>><<v>>^^><<><v<v><v<<v>^^^v^>^vvv<v>^<^vv<^<v^vv><>vv><<>>v^>>>^^>^<<>v>^^>^v<^>><<>>>^^v^<v^>>>^<>^><^v>vv>^vvvvv>><v^^<v^vv<v^v^^>v>>><<^^<><^vv^v>^^><<<<v>>v^<<<^v>>v>^^v<<vv^v><>^<^<v>>><<<<v>v<>>v<>^><>><><^^>^<v>v^v>><><>>^^^>^^vv^v>vv>^<vv^^v<<^>^<v<^v>>vv^><>>v>^^vv>^^><<<^v<^v^<>>>^^>vv<^>>>^v^^>>><v<vv<<<<<<<v<vv><^<v^><<vvv<^><^^vv><<>^><<<<<^v<<>^^^<>>v^<^v><^^v><v^><^<><vvv>^<^>>^<<v><<v<<^>v>>>v<v<<<>vv<^v>v>>>^<<>>>^v<<v^><vv><v>><v>><v<<>v<v<<<v<vv>>^>^^<v>^v<<v<>>>v<<^^^>^<^<^^^>>^^<<<^^^<><<>v^>v>^^<v<v>^<>^><vv^><^v>^<>^^<<>>^v><<<><^^v<^vv^^^v><<<^vv^>v^>^^^vvv^v>v><>><v<>^^v<<v^v>>v<<v><>v^v^v<^<<^v>vv<vv>><vv<<vv^vvvv<>^>vv^v<<v<>v>><<<<v^><v>^^v>>>v><vv>v>>>>>>><><vv<v<<<^<><<<^<>vv^><<<>^^>v<^<<>>>>^v^>>^^>^><vvv>^><^^<v^<^^^vv>>>^^vv<^>v>^^v<<<>v>>v^^<<v><^^v<>>>^><v><^<vvv<^v<^v^^<>>^v><^v>^v>^<^vvvv<<v>^>>^>^<<^^v<v^v<>^^>>>^^>^vvv<<v<^^v>v^<^>>
+^v^<>v>v^^v^^<<<<v<^v>^<^^^^v<<v>v^>v>v<<v<<^>vvv<>v<<v>^<^>vv^vv><<v>v>^>^^vv<<vv<>v^^<>v^^v><v>v>v><vv<><>^v^>v><v^<<vv<^>v^>>><^>>v<v<>^^v^^v^vv<^<vv>><^<>v^^>^v>vv^<vv^v><>><vv<<><vv>v<v<>v^<v^v<vv>>^><v^<^>>^>^<<><vv<v<vv<v<v<vvv>><><>v^><>>v>^^<^<<>v>><v>>^^^^>>><<>^v<<^<>>>^^^^vv<v<^<<<>v<v^^>^^>^^<<>^^v^<v^v><v>vv>><>>>>^v><v^><<^>^^<>vv^vvv^^^>^v^^<vv^><<v^><>>>^^>v<<>v^^^vvv^<<^vv^^><^>^v<<v^^v^>^vv<v^^v>^v<^<vvv^^>>><<<>>>><vv>^vv<><<v>v<>>>v>^^>^vvv><^<><^<<<<><v<>v>v>v<><<v<^v>v>v>^><v>>>>>>^^<<v<<^>^>^^^v<v<<v>^<^^<>^<v>^v>>^>>^><^^vv<<vv<<<vv>^^>>>^v<^v>vv<vv^>vvvv<<><<^^v>>>>^^^^vvvv^>v^><^><<>v>^v^>^>vv^>vvvvv^^^><<>><v><>^^<><^^v<>^^<><^^^^<<<v^^<^<><<<v^<>vv>v^^<<v^^^^<<v^<vv^v><<>><^^^v><<v<^^<vv>vv>v<>^<v^<<v^>^^vvv>v><>>v^v^>^^^^v>v>>^^v>^>v>^<v<v<^>vvvvv>^<^vv>^v>vv><<<>><>^>v<<>><^><vv>^v<<vv<><<>v<^v>>^>^v^vv><<<vv><^><>>><v^^>vv>v>^^>^^v>><^>^vvv>>>^><v^<<vvv><<<vv>^>>><v<v<>^>^<^<>>^v<^vv>v^^^v^<v><>>^><>v^^<<v^<><>>^><<vv<vvvv>>><^<<^<<vv>v^v^v^<vvvvv^vv<vvv
+^vvv<<>>>^^vv^^><v^<><<^>><<^v^vv<v>>^v^>><vv^>^<<v^v^vvv^^<vv<v^v><v>>>>^v>^v><^^>v^^v^v<^>v^vv<^v<<^^^>^>><v><v^<>v<v<v>^>vv>>v>^v<^>v<^<>^>vv><^>v<<<<vvvv<>^<v^v<^<<>^>v>><v>>v^<^vvv^v<>^v<^<^vv<^<^vv>^><>v<<>v<><<>><>vvv^v<<^v^v<vv><<>v<vv^vvv<><<v>^>^>^<vvv><<>>vvv^^^<^>v^v>>^<^>v><v^vv<vv<<<<v^>>v>>>>^>>^>v>vv^<v>>^v><^>v^v>><v^v^<v>v^v<^<v<^^^^<v<v^^^<v>>^v><><<v<><><v<>^>>v><><>>><^>>>v^^v<<<>v^<vv>>><^<^v>v^v<>v>^^vvv<vvv^>^<>^<<>>vv^^<<vv<>>v>vvv>^>^vv^<<><<^v^v>v>>v^^^^^v<<<v>>>v>^>vv<^>^v<^><^<<^vv<>v><>>^><>^<^<>v>>v>>>v<^<v>^^<vv<v<^><^^^>v>vv^<<>>^^^<<^<vv^>>vv^^>v^>v<^<<>^<^<v><^^<<<^><<<<vv>>vv<<v^<^><<<<^<<v<>v^^^<>>>>><>v^^v<>^vv>^>vv<<<>><v^v>v>><v>v>vv^^v^v>>v<v<<<><^v<>>vvv^>vv^^vv>>vv<^^>><><<v><^<^v^<v^^<v^vvv^>>v^^<v^^>v^>>v>v^^<v<<>^v><v^^v>><<<^>v<vv>>vvv>^v<>^<^^<^v<>>^v^^>><><<<v^^<^^^<^vvvvv>vv>^>v^^v^vv^>>><vvvv<v><><vv^>^^vv<<>^<v^^>vv^>^^<>v^<<v><<v^>>^^v^><<<>>v>>v<<v^<>^v>vv<^^>><^<<>^vvv>^^<^<v^v<<<<^<vv>><<>vv>^>^^<<>>^^vv><^^>v^<>v><>^^<^^v><<^>>^>
+<><<^<<>^>^^^^>vv^v><^>^><<><^><^v<vv^<^v><>^^^><>^v^v<><<<>>v<>v>^^<^v^^^><>v^^^^<<^v>^<><<^vv<<<<^>>>^<v>>v^>^>^<><v>^><>v>^>^<^<^v^vv<vv^^>^<v^><<>>>>v>^>^v^vvvv>^v<<>v>><>><v>^>^^^>vv<^vvv<^<v^vv<v^vvv><v<>>v><<vv<>^vvvv^v>v>>>^v>><<v<>^>>>^v>vv^v<<>^^^<^v<<^^<<^^^<<^v^^v>>^^^><>^<^<v>v>><<^<<v^vv^^>v>vv<<v><<^^<<<<v^^<^v^<><v^^v><v<>><v<^v>vvv^><^^v>^^^>><v>>>^^v>>>><>>^<>>^^^v<><^^v<v<>v<^<vv>v^^vv^v^<>><v<<<<^vv<<<^v<^v>^^^^><vv<v><<<>^v^>v<v<v^>>v<>^^>v>^>>^>^>v>>>^^>^<><<>^^vv>^^v^^^vv<^>^^^v<<>v<>^<<v^v<<^<>>^>^>><><v<><^<v<^>^^>^<<>^v>^v<<^^>v><><<v^<v<^^<<<vv<>>v^vvvvv<^^^vv>^>vv>^^^>v><<<^<>v>>^^^<<<>^><v^^<><>^<v<<>><v<<v^^^><v^^>>v>><vv^>v^v<v<<^vv^v^><^>^>vv^>vv>>^<^<vv^<v<v<v>>^><^<vvvv<<<v<>>>><><vv<><<^vv<^^^v<><^vvv>>^^<^<^^^vvvv^^^v<v>>^v<<v^>^^>v>>^<^v^<<^v<vv^<v><vvv^v>v><^<^v<<v>^^>^v>vvv<^vv>^^>^<>^>v^><<<>v^v<v>^^v<><^vvv^^v<>v^^<^>^<><^^<<<^<>vv^<^<>^^^><>v<<<v^^^^v>>^>vv^^^v<>vv><vvv>^<<>^<><v>v<>>>>v^<<<>v<>v<v<>v^><v<v^><vvv^<^v>^><<>vvv><<>><<<^<v^v><^^<^
+v<<v^v^<^>>>vvv>^^>^>v<>><v^vv><<^v>^v^><v<v<<<<>><^v^<<>^>>>vv^<<^<<>v>vv<>>>>v<<>^vv><<v<vvvv^<^>^>>>><v>^<vv<^<^><^><>>vv><v>^>v^<<><<vv^^^<^^<^>^><<^^>v^v^^>^^><^<^>^vvv^<v<<><^^>^<<^>^^>>^<><<^vv>^>v>v>v<^^<>>^^><v><<<^v>^^vv^v^^^^>vv>>^>vvv^vv>^v^<<>><>><<<<>>>^^<<v<^>>v<>v<>v^<^vv^v^v>>v<v<>^^v><<>>>v>vv<^<v<^^<vvv^>^v^<^<<v^>>>v<^vvvv><vvv<^>>^v<v><vv^vv>^v<vvv>^<v>v>^>><>vv<^^v<<<^>>v<>v^><vv>^^vv^v><v>><v<>^v><>^^^>v<^^v>>v^v<<v^>^vvv<^<v^<<<^^^v^>v>>vv><^^v><<<<v^>^v^vv><^><><><vv^v^^>>>^<^^^<<>v^>v<<><v^>>vvv>>><<^^v>^^<^^v<v^>v<v>^v^^v^vv><^<^^<^vv>>v<v^<^<^v^>^>^^^<<v>>^vvv<^<>^^^^<^<<<>^>vv^v<><^<<v^><v><><^v<^>^<^>^v><>vv>>^v<^^>>^<<>>><>vv<vv^^>^v<>^^<<^v^^^v^v^vv>vv<^<>>v<>>vvv^v<^v>vv><<>^<<<v^<<>v^^><^<>>^>>v>v<^><^<^vv<<<^v^<>v^^^^v^v^vv<>>v<<<vv<v><<^>>v^^>vv>>>^<>>>><<>^^^<>v>^>vv^<vvv<vv>>^<v^<vv<^>>>v^^^>>v<>^<><v<v>^>^v^v<>^<^^>^^vv>><>^>vv><^v>^^v^^<^v><v^v>>^v<>><>v<<^v^v>^<^v><vv>^>><^>v<>^<v<^>^>^<>^>v>^v>^<v>>>><<>^<^v<^<<v^>>^^^><v>^^<<v^<^><><>^^>><<<<>
+^>v<^>>vvv>^v^v>^><^>><^>vv^<^^^<<>^<>>^<>v>><><<<^>^^>^^^<^><<v<>><><>>^^^^^<<^<v<^^>v>><>vvv^>><>><vvv<^>^>^>vv^<<v>vv^>^v>^<v<^<<>vv<<^v<<>>v<><v>><^>v<^^^>v^^v>v>v<><^><<vv>>vv^v<>^v<v<^<v<v>>><v>^>>v><>>vv>^^<v^^vv>><<<<v^><<^<>v<><<^>>^<^><^vv>^<v^>^^^vv^v<v>>>^^^^vv^><>v<<><><>^vvvv><>v>vv^^>>^^<^v<^>^><^^<<^>><^>>><>^v<^^<>><<><^v^v^v<^<^><>><>^><<^^>^^><v<^v>>^vv^>>>v><<<>vvv<>>v<^v^<<<v^v^^>vv>v^<<v^>vv<>><^>>vvv^^<^<v>v>>^^v<^v>vv^v>><>v^<^^<<>^<v><^v^v<<^<v^>v<<^^>>v<>^v<v^>>>><v><<v^<^^v><<v<<<<v<<><^<>>^>^vv^v^v>v>>^<>vv<^^v<^>>>>v<>v>>>>vvv>>>vvv^>^>>>vv^vv>^v^v>v>>^^<<vv>><<v<>><vv<^v><<>^v<v^^><^><<<v^^<<v^>^>^<><v>><v>v^<v<v>>v<>v^^<<vv>v<><v><>vv<><>>^v<<v>^><v^<v^vv<^<><^><>v<>^>><<<>>^^<<<><^v<v>v^v<<^v^^vv^v>v<>^>><^v><^v^vv>>>v<v<<<^^>^<<>v>vv>>^^<v>><<<>^^v>^<<v<^<^<>>v<<<v<<v<v<>>><>v<^<>v^>>>vv^^<v^>>>>><>v^vvv><^>v<v>v<>^>vvvv>>^<<>><>v<^>>v<<<<>^^v>^^<>^<v<<^v<><^vv^v>>>^>vv^v<vv^v>v>^<v^^^^v<v>^v^v>^v><>v^^><vvv>^v^v^v^^^vv><v<<><><<>>^<<><vvv^<vv^^>><v>^vv
+><>v>^v<v>><^<>v>^vvv<v^^v^v<<^^vvv<^>v><>v<^v<v^^^>>^<v>^v<<<^<<><><^vv>vv><>vvv<^<<<<vv<^<>><<^<v<^^v^<><^<v>>v<vv<^v^^><<<^>v<>v<v>v<>v^><>v^^<<^<><^<<^>^v>>><^<<^v<<^^><<vvv>><v>^>>>^vv><^v<^v^v^vv>>vvvv<>>>v<<^>^^^>vv^><><>^<v<^<><>><<<v<v^<v<^v^>^v^>v<>^^><vv<>vv>^<<^^^^<^>>^>vv>^v<^><vvv>>^<<v^^><^^^^>vv><>v>vv>><<^vv^><><^vv^<>v>v^v<vvv>>^v^v<vv^>^^^^vv><<vvv^v^v>vvv><^v^^<v^<>^v<vv><>><<<<><>v<<^v<><<<<v<<^^^>>v><>^vv><^>^>><>^^><v<^^v><^^v><^^^v><v^>><vv<>^vv<^^v^<^<v^>^^<<<vv<<>^^>><v<v>v<vv>><<v^^<v<><v>><>^><vvv^vv^^v^v><>v><^v>>>vv<^v^v>>vv^<^<vv>>v^<>v<^><>>^v^<vvv^<>^<>><^^>v<<<>^<><^<<^vvvv>v<^<^vv^><<vv<>v><^v<>^^<><<v>>><>^>>v^v><vvv>vv>><^^v<^v^<^>^<>vv>><<<<v>^><><v<>>^v><>v<v^^<^^<<^><vv^^<<><>>>^^<v><<>v^<v>v^v^v<<<>^v<<<<v^<vv^<>>>vv^^^^>^>v^<^^<v>><<<v<<<><<>vvv^><v>>^vv>v<>>^v<^vv>^v><^v>><vvvv^v<<^^^^><>v^><v<vv>>^<>>^v<^vv^^<<>vv<>v<>vv>>>v>v^v><vv^v^^v<>>>^v^<>v>^^>v^v<^v<vv<<>>^^v^^<<<>><<<<v>^>^<vv><^>><>v<^<>^<>v^>vvvv>v^><<>>><^^<<><^<^vv^<>><>^^^v>>^^>

data/16.ans

@@ -0,0 +1,2 @@
+106512
+563

data/16.in

@@ -0,0 +1,141 @@
+#############################################################################################################################################
+#.....#.....#.....#.........#.....#.......#...#.........#.....#.....#...........#...#.............#.....#.....#...........#.....#..........E#
+#.###.#.###.#.###.#####.#.#.#.###.#.#####.#.#.#.###.###.#.#.###.###.#.#######.###.#.#.###.#######.###.#.###.###.###.#####.#.###.#.#####.###.#
+#.#.....#.#.#.#.....................#.....#.....#...#...#.#.......#.#...#...#.....#.#.#.#.....#.#.....#...#...#.#.#...#.....#...#...#...#...#
+#.#######.#.#.#######.###.#.###.###.#.#.###.#####.#.#.###.#######.#.###.#.#.#######.#.#.#####.#.#########.###.#.#.###.#######.###.###.###.###
+#...........................#...#...#.#.#...........#.#...#.#...#.#.#...#.#.....#...........................#.......#...#...#...#.#...#.....#
+#.###.#.#.#.###.#.#.#######.#####.#.#.#.#.###.###.#.#.#.###.#.#.###.#.###.#####.#.#.#####.#.###.###.#######.###########.#.#.###.#.#.###.#####
+#.#...#.#.#.#...#.#...#...........#.........................#.#...#.#.#...#...#.#.#...#...#.#.......#.#...#.........#...#.#.#...#.#.#...#...#
+#.#.###.#.#.#.###.#####.#####.#####.#.###.###.#.#.#.#########.###.#.#.#####.#.#.#.###.#.###.#.#######.#.#.#########.#.#####.#.###.#.#####.#.#
+#.#...#.#...#.#.......#.#.....#...#.#...#.....#...#...........#.#.#.........#...#...............................#...#...#...#.#...#...#...#.#
+#.###.#.#####.#######.#.#.#######.#.#.#.#######.#.#.#.###.#####.#.###.#.#######.#######.#.#.#####.###.#.#.#.#.#.#.#####.#.###.#######.#.###.#
+#.#.#.#.......#.......#...#.#.....#.#.#.......#.#.#.#.#...#...#.....#.#.....#...#.........#.#...#.....#.................#.......#...#...#...#
+#.#.#.#########.#####.#####.#.#.###.#.#.#######.#.#.#.#.###.#.#####.#.#####.#.#########.#.#.###.###.###.#.#.###.#.#.#.#########.#.#.#####.#.#
+#...#.#.........#.......#...#.#.....#.#.....#...#...........................#.........#...#.............#.#...#...#.#.....#...#...#.......#.#
+###.#.#.#####.###.###.#.#.#.#.#######.#####.#.###.###.###.#.#####.#.#.###########.###.#.#####.#.#.###.###.###.#####.#####.#.#.#############.#
+#...#.#.....#.....#...#...#.......#.....#...#.#.....#.#...#.#...#.#...#.............#.#...#...#.....#...#...#.#...#.#...#...#.#.............#
+#.#.#.#####.#######.#.###########.#.#####.#.#.#.###.#.#####.#.###.###.#######.#.#.###.###.#.#######.#.#####.#.#.#.#.#.#.#####.###.#.#######.#
+#...#...#.#...#.....#.........#...#...#...#.#.#.#...#.......#...#.#.#.#.....#.#...#.......#.......#.#.#.....#.#.#.....#.....#...#.#.....#...#
+#.#####.#.###.#####.#########.#.###.#.#.###.#.###.#############.#.#.#.#.###.#.#.###.###########.#.#.#.#.#####.#.###########.###.#####.#.#.###
+#.#.....#...#.....#.........#...#.#...#...#.#...#...#...........#.#...#.#.#.#.#.....#.#.......#.#.....#.#...#.#...#...#.....#.#.....#.#...#.#
+#.#.#.#####.###.#.#####.#########.###.###.#.###.#.#.#.###.#####.#.#.###.#.#.#####.###.#.#####.#########.#.#.#.#.###.#.#.#####.#####.#.#####.#
+#.#.#.#...#.....#.....#...............#...#.#.#.#...#.#.#...#.#.#.#.#...#.#.....#.....#.#...#.....#.....#.#.#.#.#...#.#.#.....#.....#.#.....#
+#.#.###.#.#.#########.#.###############.###.#.#.#.###.#.###.#.#.#.#.#.###.#####.#######.#.#######.#.#######.#.###.###.#.#.#.###.#####.#.###.#
+#.#.....#.#.......#...#...#...........#...#...#.#...#.#...#.#.#.#.#...#.........#.......#.......#.#.#.......#.....#.#.#.#.#.#.......#.#.#...#
+#.#######.#####.###.#####.#.#.#######.###.#####.###.#.#.#.#.#.#.#.#############.#.#########.###.#.#.###.###########.#.#.#.###.###.#.#.#.###.#
+#.#.....#.#...#.#...#...#.#.#.#.....#.#.#.....#...#.....#...#.#.#...#.........#...........#...#.....#...#.........#...#.#...#.#...#.#.#...#.#
+#.#.#####.#.#.#.#.###.###.###.#.###.#.#.#####.###.###.#####.#.#.###.#.#######.#.#######.#.###########.###.#######.#.###.#.#.#.###.###.###.#.#
+#...#.....#.#...#...#...#.....#...#.........#.......#.#...#.#.....#.........#.#.#.....#.#.......#.....#.....#...#.#.#...#.#.#...#...#.....#.#
+###.#.#####.###.###.###.#.###############.#######.#.###.#.#.#.#############.#.#.#.###.#########.#.#####.#####.#.#.#.###.###.###.#.#.#######.#
+#.#.#.#.......#.#.#...#...#.............#.#.......#...#.#...#.#...........#.#.#...#.#...........#.........#...#...#...#.....#...#...........#
+#.#.#.#.#.#.#.#.#.###.#.#.#.#####.#.###.###.#####.###.#.#####.#.#.#######.###.#.###.#############.#########.#.#######.#.#####.###.#.###.#####
+#...#.#.#...#.#.....#.#...#.......#.#...#...#...#...#...#...#.#...#.....#.#...#...........#.....#...#.......#.#.....#...#.....#...#...#.#...#
+#.###.#.#####.###.###.#.#######.#.#.#.###.###.#####.#####.###.#.#.#.###.#.#.###.###.#######.###.###.#.#######.#.###.#.#.#.###.#####.#.#.###.#
+#...#.#.#...#.#.#.#...#...#.#...#...#.#...#...........#.....#...#.#...#.#...#...#.#.#.......#.#...#.#.......#.....#...#.#...#.#.....#.#...#.#
+###.#.###.#.#.#.#.#.#####.#.#.#######.#.###.#########.#####.###.#.###.#.#####.###.#.#.#######.###.#.#######.#####.#########.###.###.#.###.#.#
+#...#.#...#...#...#...#.....#...#...#.#...#.....#...#.....#.....#...#.#...#.......#.#.....#...#...#.#.....#.......#...........#...#.#.......#
+#####.#.#.###.#######.#.#######.#.###.#.#.#######.#.#####.#######.#.###.#.#.#######.#####.#.#.#.###.#####.#########.#.###.#.#.#.###.#######.#
+#...#.#.#.....#...#...#.#.......#.....#.#.......#.#...#...#.....#.#...#.#.#...........#.#.#.#.#...#.#.....#...#.....#.#.#.#.#.......#...#...#
+#.#.#.#.#.#####.#.#.#####.###.###.#####.#.#####.#.###.###.#.###.#####.#.#####.#.#####.#.#.###.###.#.#.###.###.#.###.#.#.#.#######.#.#.#.#.###
+#...............#.........#...........#.#.....#.#...#...#...#...#.....#.......#.#...#.#.#...#...#.....#...#...#.#.....#.#...#.....#...#.#...#
+#.#####.#.#################.#########.###.###.#.###.###.#####.###.###.#.#.#####.#.#.#.#.###.#.#.#####.#.###.#.#.#.#####.###.#.###.#.###.###.#
+#...#.#...#...#...#.....#...#.......#...#...#...#...#.#.....#.#...#.#.........#.#...#.......#.#.......#.#...#.#.#.........#.#.............#.#
+###.#.###.#.#.#.#.###.###.###.#####.###.###.###.#.###.#####.#.#.###.#.#.#######.#.###.#####.###.#######.###.###.#.#####.###.#.#####.#.###.#.#
+#...#...#...#.#.#...#.......#.#...#.#...#.....#.#.#...#.....#...#.....#.........#.....#.....#...#.....#...#.....#.....#.....#.#.......#.#.#.#
+#.###.#.#.###.#.###.#.#.#####.#.#.#.###.#.#.#.#.#.#.#.#.#########.#####.#########.#####.#####.###.###.###.#.#########.#.#####.#.###.###.#.###
+#...#.#.......#...#...#.#.....#.#.#...#...#.....#.#.#.#.#...#.......#...#.........#.....#.....#...#.#...#.#.......#.#.#...#.....#.......#...#
+#.#.#####.#.#.#.#.###.###.#####.#.###.#####.#####.#.#.#.#.###.#######.###.###.#.###.#######.#.#.###.###.#.#######.#.#.###.#.#######.#.#.###.#
+#.#.......#...#...#.#...#.....#.....#.#...#...#...#.#.#.#.....#.......#...#...#...#.#.......#...#.....#...#.#.......#.#...#.#.......#.#.#.#.#
+#.#######.###.#.###.###.#####.#.###.#.#.#.###.#.#####.#.#######.###########.#.#####.###.#####.#.#.#.#######.#.#####.#.#.###.#####.#.#.#.#.#.#
+#.....#.#.............#.#...#...#...#.#.#...#.#...#...#.#.....#...#...#...#...#...#.....#.....#.#.#.#...#...#.#...#.#.#.#...#.....#.#.#...#.#
+#.###.#.#.###.#######.#.#.#.#.#.#####.#.###.#.###.#.#.#.#.###.###.#.#.#.#.#.#.#.#.#######.#####.#.###.#.#.#.#.#.#.###.#.#.#.#.#####.#.#####.#
+#.............#...#...#...#.....#.....#...#.........#.#...#.#.#...#.#...#...#...#...#.....#.....#.....#...#.#.#.#...#.#...#...#...#...#.....#
+#.###########.#.#.###############.#######.#############.###.#.#.#.#.###############.#.#.#.#.#####.#########.#.#.#.#.#.###.#####.###.#.#.###.#
+#.#.....#.....#.#...........#...#.......#.#...#.......#.....#.#.#.#.#...#.....#...#...#.#.#.....#.........#...#.#.#...#.........#.....#.#.#.#
+###.###.#.#.#.#.###.#######.#.#.#######.#.#.###.#####.#####.#.#.#.#.###.#.#.#.#.#.#####.#.#####.#########.#####.#.#####.###.###.#.#####.#.#.#
+#...#...#.#.....#.......#.#...#...#...#.#.....#.#...#.....#.#.#.#.#...#.#.#.#...#.#...#.#.#.....#...#...........#...#...#.....#.#.#.....#.#.#
+#.#####.#.###.###.#####.#.#######.#.#.#.#.#.#.#.#.#.#####.###.#.#####.#.#.#.#####.###.#.#.#.#####.#.#######.#######.#.###.#####.#.#.#####.#.#
+#.....#.#.......#.#...#.....#...#...#.#.#.#...#.#.#.....#...#.#.......#...#.#.........#.#.#.#.....#...#...#.#.....#...#...#...#...#...#.#...#
+#.###.#.#######.#.#.#.#.#####.#.###.#.#.#.#.###.#.#####.#.#.#.###.#########.#.#######.#.#.#.###.#.###.#.#.#.#.###.#.#####.#.#.#.#####.#.#.###
+#...#.#.#...#...#.#.#...#...#.#.............#...#.#...#.....#...#...........#...#.....#.#.#...#.#...#...#.#.....#.#.#...#.#.#.#.....#.#.....#
+#####.#.#.#.#.###.#######.#.#.#############.#.###.###.#########.###############.#.#####.#.###.#.###.###.#.#####.#.#.#.#.###.#.###.###.#####.#
+#.....#...#.#.#.#.........#...#.#...#.......#...#...#.....#.....#.........#...#.#.#.....#.#...#.#...#...#...#.#.#.#...#.....#...#.#...#...#.#
+#.#####.###.#.#.#.#.###########.#.#.#.#########.###.#.###.#.#.###.#######.#.#.#.#.#.#####.#.#####.###.#.###.#.#.#.#############.#.#.#.#.#.#.#
+#.............#.#.....#.........#.#...#.....#.#...#...#.#.#.#...#...#...#...#.#.........#.#.......#.........#...#.....#.........#.#.#.#.#.#.#
+#.###########.#.#####.###.#####.#.#####.#.#.#.###.#####.#.#.###.#.###.#.#.###.#.#######.#######.#.#########.#.#######.#########.###.###.#.#.#
+#.#.......#...#.....#.#...#.#...#.#...#.#.......#.#...#...#.#...#.#...#.#.#...#.#.....#.......#.#.#...#...#.#.......#...#.....#.....#...#.#.#
+#.#.#####.#.#.#.#.#.#.#.###.#.#.#.#.#.#.#.#.#####.#.#.#.#####.###.#.###.###.###.###.#####.#####.#.#.#.#.#.#.###########.#.###.#.#####.###.#.#
+#...#...#.#.#.#.#.#.#.#.#.......#...#.#.#.#.#.....#.#.#.......#...#.#.....#.#.......#.....#.....#...#...#.#...........#...#...#.#.....#.#.#.#
+#.###.#.#.###.#.#.###.#.#.###########.#.#.###.#####.#.#######.#.###.#####.#.#########.###.#.#########.###.###########.###.#.###.#.#####.#.###
+#.....#.#...#...#.....#.#.#.........#.#.#.#...#.....#.....#...#.........#.#.........#...#...........#...#.#.........#...#.#.#.#.#.#.........#
+#######.###.#.#####.###.###.#######.#.###.#.###.#######.#.#.#####.#####.#.#.#######.#.#.###########.#####.#.###.#######.#.#.#.#.#.#.###.###.#
+#.....#.#...#...#...#.#.............#.....#.#.....#...#.#.#.....#.#...#.#.#.#.#...#.#.....................#...#...#.....#.#.#...#.#.#...#.#.#
+#.###.###.#.###.#.#.#.#.###########.#####.#.#####.#.###.#.#####.#.###.###.#.#.#.#.#.#########.###########.#######.#.#####.#.#.###.###.#.#.#.#
+#.#.#...#.....#...#.#...#...........#.....#...#...#...#.#.....#.#.....#...#...#.#.#.....#...#...#...#.....#.....#.#.....#.#.#.#...#...#.#.#.#
+#.#.###.###.#.#####.#####.#######.###.#.#.###.#.#####.#.#######.###.#.#.#######.#.###.#.#.#.###.#.#.#######.###.#.#####.###.#.#.###.###.#.#.#
+#.#.........#...#.#...#...#.....#.#...#.....#.#.......#...#...#.#.#.#.#.........#...#.#.#.#.#...#.#...#.....#...#...#...#...#.#...#.#...#.#.#
+#.#########.###.#.###.#.#.#.###.###.#########.###########.#.#.#.#.#.#.###########.#.#.#.#.#.###.#.###.#.#####.#####.#.###.###.###.#.#.###.#.#
+#.#.....#.#.#...#.....#.#.#...#...#.....#...#.#.........#.....#...#...#.......#...#.#.#.......#.#.#.#...#.....#...#...#...#.....#...#.#...#.#
+#.#.###.#.#.#.###.#.###.#.###.###.###.#.#.#.#.#.#######.#####.#.#.###.#.#####.#.#.#.###.#####.###.#.#####.#####.#.#.###.#####.#######.#.#.#.#
+#...#...#...#...#...#...#...#.#.#.......#.#.#.#.#.....#.#.....#.#.#.#.#.....#...#.#...#.#...............#.....#.#.#.....#...................#
+#####.###.#.#.#.#.#####.#.###.#.#####.#.#.#.#.#.#.###.#.#.###.#.#.#.#.#.###.###.#####.###.#.###########.#####.#.#.#######.###############.#.#
+#.....#.#...#.#...#.....#.#...#.........#.#...#.......#...#.#...#...#.#...#...#.#...#.....#.....#...#...#.#...#.#...#.....#.......#...#...#.#
+#.#####.###.#.#.###.#.#####.###.#####.###.#####.#.#.###.###.###.#.###.###.###.###.#.###########.#.#.#.###.#.###.#.#.#.###########.#.#.###.#.#
+#.#...#...#...#.#.#.#.....#.#...#.......#.#.....#.#.......#.....#.....#.#...#.....#.......#.....#.#.........#.....#...............#.#...#.#.#
+#.#.#.#.#.#.###.#.#.#####.#.###.#.#####.#.#.#####.#.###.###.#####.#.###.###.#############.#.#############.#.#.#####.#########.#.###.###.###.#
+#...#.#.#.....#.#...#.....#...#.....#...#.#.#.#...#.#.#.....#.....#.#.........#.......#.............#...#.#...#.........#...#.#.#...#.#.....#
+#.###.#####.###.#.###.#######.#######.#.#.#.#.#.###.#.#######.#####.#.#######.#.#####.#.#.#########.#.#.#.###.#.###.#####.#.#.#.#.###.#######
+#.#.#.....#.....#...#.......#.#.....#...#.#...#...#...#.......#.#...#...#...#.#...#.....#.......#...#.#.#.#...#.....#.....#.#.#.#...#.......#
+#.#.#####.#.#.###.#########.#.#.###.###.#.###.###.###.#.#######.#.#######.#.#####.###############.###.#.#.#.#####.#.#.#####.#.#.###.#.###.#.#
+#.#.....#...#.#...#.......#.#.#.#.#...#.#.#.....#...............#.#.....#.#.......#.....#.......#.#...#.....#...#.#.#.#.#...#.#.#...#...#.#.#
+#.#.#.#.###.#.###.#.#####.#.#.#.#.###.#.#.###.#####.#####.#####.#.###.#.#.#.#####.#.###.#.#####.#.#.#########.#.#.#.#.#.#.#.#.#.#.###.#.#.###
+#.#.#.#.........#.#...#.....#.#.#...#.#.#...#.#...#.#...#.#...#.#.#...#...#.....#.#...#...#.#...#.#.#.....#...#.#.#.#.#.#.......#...#...#...#
+#.#.###.#######.#####.#######.#.#.#.#.#.###.###.#.###.#.###.#.#.#.#.#######.###.#####.#####.#.###.#.#.###.#.###.#.#.#.#.###########.#.#####.#
+#...........#.#.......#.....#.#.#.#.#.#...#.....#...#...#...#.#.#.#.#...#...#.#.....#.....#.#...#.....#.#.#.#.......#.#.#...........#...#...#
+#.###.#.###.#.#.#.###.#.###.#.#.#.#.#.#.###########.#.#.#.#.#.###.#.#.#.#.###.#####.#####.#.###.#######.#.#.#######.#.#.#.###########.#.#.#.#
+#...............#.#...#.#.#...#.#.#...#.........#.#...#...#.#.....#.#.#...#.......#.......#...#.......#...#.......#.#...#.......#.....#...#.#
+#####.#.#####.###.#.###.#.#####.###.#####.#####.#.#########.#######.#.#######.#.#.###########.#.#######.#########.###.###.#.###.#.###.#####.#
+#...#.#...#.......#.#...#.........#.....#...#.#...#...........#.....#.....#...#.#.#...........#...#...#.#.......#.....#...#.#.....#.......#.#
+#.###.#.#.#######.###.###.#######.#.###.###.#.###.#.#####.#.#.###.#.#####.#.###.#.#.###.#.#######.#.#.#.#.#####.#####.#.###.#######.#.###.#.#
+#...#...#.......#.#...#.......#...#...#.....#.#...#...#.#...#...#.#.....#.#...#.#.#.#.#.#.......#...#.#...#...#.......#.......#.......#.#.#.#
+#.#.###.#######.#.#.#####.#####.###.#########.#.#####.#.###.###.#.###.###.#.#.#.#.#.#.#.#.#####.#####.#####.#.#####.#.#.#####.#.#####.#.#.###
+#.#...#.....#...#.#.....#.......#.....#.......#.#...#.....#.#...#...#.....#.#...#.....#.......#.#.........#.#.......#.#.....#...........#...#
+#.#.#.#.###.#.###.#####.###.#####.###.#.#####.#.#.#####.###.#.###.#####.#.#.#.#.#.###########.#.#.#######.#.###.#.###.#####.###.#.#.#.#####.#
+#.#.#.#.....#...#.....#.#...#.....#...#.#...#...#.....#.#...#...#.#.....#.#.#.#.#...#.....#.#.#.#.......#.#...#.#.#.......#.................#
+#.#.###.#######.#.#####.#.###.#####.#.#.#.###########.#.#.#####.###.#####.###.#.#####.###.#.#.#.#######.#.#.#.#.#.###########.#.#.#####.#.#.#
+#.#...#.......#.#.#.........#.#...#.#.#.#...........#.#.#.#...#...#.....#.....#.......#.......#...#.....#.#.#.#.#.............#.#.#...#...#.#
+#.###.#.###.#.#.###.#######.#.#.###.#.#.#.#####.###.#.#.#.###.###.#.###.#####.#########.#########.#.#####.###.#.###############.#.#.#.#####.#
+#...#...#.....#...#...#.....#...#...#.#.#.#.#...#.......#...#.....#.#.#.......#...#...#.#.....#...#.#...#.....#.....#.......#...#...#.#.#...#
+###.#.###.#.#####.###.#.#######.#.#####.#.#.#.#########.###.#.#####.#.#########.#.#.#.#.#.###.#.###.#.#.#######.#.#.#.#####.#.#####.#.#.#.###
+#...#.#...#.........#...#.....#.#...#...#.#.#.............#.#.....#.....#.......#...#.#...#.#.#.#...#.#.......#.#.#.#.....#.......#.#.......#
+#.###.#.###.#######.#######.#.#####.#.###.#.#############.#.#####.#######.###########.#####.#.#.#.###.#####.###.#.#.###.#########.#.#.#.#.#.#
+#.................#...#.....#.....#.#.#.#...#.......#...#.#.....#.....#...#.........#...#...#...#...#...#...#...#.#.....#.....#.#...#.#.#.#.#
+###.#####.#.#.###.###.###.#######.#.#.#.#.###.#####.#.#.#.#####.#####.#.###.###.#######.#.#.#.#.###.###.#.###.###.#######.###.#.###.#.#.#.#.#
+#.#.......#.....#...#...#.#.....#...#.....#...#...#.#...#.....#...#.....#.#.#.#.........#.#...#...#.#...#.#...#...#...#...#...#.....#.#.....#
+#.###.#####.###.###.###.#.#.###.###.#.#####.###.#.#.#.#.#####.###.#######.#.#.###########.#.#####.#.#.###.#.###.###.#.#.###.###.###.#.#.#####
+#...#.#...........#.#.....#...#.#...#.......#.....#...#.#.....#...#...#...............#...#.......#.#.#.#.#.#.#...#.#...#.#...#.#.....#.#...#
+#.###.#.###.#######.#######.###.#.#############.#.#####.#######.#.#.#.#######.#######.#.###########.#.#.#.#.#.#.###.#####.###.###.#.#####.#.#
+#.....#...#.....#...#.......#...#.....#.........#.....#.#.......#.#.#.....#.....#.....#.....#.......#.#.#...#...#.....#.....#...#...#.....#.#
+#########.#.#.#.#.###.#.#.###.###.#####.#.#####.#######.#.#########.#####.#.#.###.#######.###.#####.#.#.#########.#.#.#.###.###.###.#.#####.#
+#.........#...#.#.....#.#...#...#.#.....#...........#...#.#...#...#.#...#.#.#.......#.....#...#...#...#.........#...#.....#...#...#.....#...#
+#.#########.#.#.#.#####.###.###.#.#.#.#############.#.###.#.#.#.#.#.###.#.#########.#.#.###.#.#.#.###.#####.###.#.#.#.###.###.###.#.#.###.#.#
+#.#.........#...#.....#.#...#.#...#...#.........#.....#.#...#.#.#...#...#.........#...#...#.#.#.#...#.#.....#...#.#.#.......#...#.........#.#
+#.###.#####.#.#########.###.#.#######.#.#######.#.###.#.#.###.#.#####.#######.###.#######.#.###.###.#.#.#####.#####.#######.#.#.###.#######.#
+#...#.#.....#...#.....#...#...#.....#.#.......#.#.....#...#...#...#...#.......#.#...#.#.....#...#...#.#...#.#.....#.......#.#.#.........#.#.#
+###.###.###.###.#.###.###.###.#####.#.#########.#######.###.#####.###.#.#.###.#.###.#.#.#####.###.###.###.#.#####.#.#####.###.#.###.###.#.#.#
+#...#...#.#...#...#.#.....#...#.....#.........#.......#.#.#.....#...#...#...#...#...#.....#...#...#.#.....#...#...#.#.....#...#.#.....#...#.#
+#.###.###.###.#####.#######.###.###.#######.#.#.###.###.#.#####.###.###.###.#####.#.#####.#.###.###.#######.###.###.#.#####.###.#.#.#.#####.#
+#...........#.#.....#.#.....#...#.#.#.#.......#.......#.#.....#...........#.....#.#.#.........#...#...#.....#...#...#.......................#
+#.#####.###.#.#.###.#.#.#######.#.#.#.#.#######.#####.#.#####.#########.#.#####.#.###.###.#######.#.#.#.###.#.#.#####.#.#.#.#####.#.###.#.###
+#.......#...#.#.#.....#...#.....#.#...#.#.....#...#.#.......#...#...#...#.#.....#...........#...#.#.#.#.#.#...#.......#.#.#.......#...#.#.#.#
+#########.###.#.#####.###.#.#####.###.#.###.#.###.#.#######.###.#.#.#.#.#.#.###.###########.#.#.#.#.#.#.#.#####.#######.#.###########.#.#.#.#
+#.....#...#...#.....#...#.#.#.....#...#...#.#.......#.....#.....#.#.#.......#.....#.....#...#.#...#.#.#.#...#.....#.....#.#...........#...#.#
+#.#####.###.#####.#.###.#.#.#####.#.#####.#.#######.#.###.#######.#.###.#########.#.###.###.#.#######.#.#.#.###.#.#.###.#.#.###.#####.#####.#
+#.#.......#.#...#.#.#...#...#...#.......#.#.#...#.#.#.#...#.......#...#...#.....#.#.#.#.......#.......#...#...#...#.#.#.#.#.................#
+#.#.#######.#.#.###.#####.###.#.#####.###.###.#.#.#.#.###.#.#########.#.#.#.###.###.#.#####.###.#####.#######.#.###.#.#.#.#.#.###.#.#####.#.#
+#...#.....#.#.#...#.......#...#.....#.#...#...#.#...#...#...#.......#...#.#...#.....#.....#.....#.....#.......#.#.....#.#.#.#...#.#.....#.#.#
+#.###.#.#.#.#.###.###.#####.#######.###.###.###.#.#####.#.#####.#######.#.###.#######.###.#.###.#######.#######.#.#####.#.#####.#.###.#.#.#.#
+#.#...#.#.................#.......#.....#...#...#.#...#.......#.#...#...#.#...#.....#.#.#.#.#.#.....................#...#.....#.#...#.#.#.#.#
+#.###.#.#####.#.###.###.#.#######.#.#######.#.#####.#.###.###.#.#.#.#.#.###.###.###.#.#.#.#.#.###.#.#.#.#.###.#.#.#.#.#######.#.###.#.###.#.#
+#S....#...........#.....#...................#.......#.........#...#.........#.....#.....#.......#...#.....#.....#...#...........#...#.......#
+#############################################################################################################################################

data/17.ans

@@ -0,0 +1,2 @@
+2,0,7,3,0,3,1,3,7
+247839539763386

data/17.in

@@ -0,0 +1,5 @@
+Register A: 18427963
+Register B: 0
+Register C: 0
+
+Program: 2,4,1,1,7,5,0,3,4,3,1,6,5,5,3,0

data/18.ans

@@ -0,0 +1,2 @@
+262
+22,20

data/19.ans

@@ -0,0 +1,2 @@
+280
+606411968721181

data/19.in

@@ -0,0 +1,402 @@
+rwgw, ruwgb, urwbr, wu, uurbubr, gbbr, uwwb, rubgwu, wggwbwr, rugubuww, uw, rgru, rgrr, rrg, rbb, uurbrww, br, uwrwrwgb, bwbw, wgbu, wggu, urg, ugr, ugur, gurrbrr, ubgrruu, bb, rburguu, urgg, wggugggr, brww, bwwgr, wugub, grgg, ugw, grubw, gbwru, rww, wbu, ggwbu, ugurw, ggwb, uubuwgb, bbugw, rgg, wurr, bwbb, wburbb, rbrb, bbrwgw, gwbb, ubggr, gurr, rrr, rburg, uug, bbrubu, bwgu, gwug, guw, buwurgw, rruwggg, ubb, wwb, wbrg, wgr, wgrw, gubrr, rrwru, gbub, rbr, rwr, rubwu, ub, bgwr, gu, ggggwrbr, wrw, grg, rbuwu, bgbr, ugww, wrg, brwub, gruu, gbwbw, wubw, wur, grggwb, uuwuug, wug, rruuw, wgwg, uww, gbgu, rurr, gwguu, gwrwbw, guuww, rbugw, gg, uwbw, ubgrubur, wurrb, rgugurr, wrr, buggb, urwrb, ubuu, rgu, gwggb, uuu, uub, bruubb, bww, uwgb, rrubwg, ubwu, ugu, buwrrbwr, bbr, rbrww, ubuwg, bwwrr, gbwg, bw, gguugu, bgbbw, ggb, wrruuwbr, rug, uur, rgw, gbb, wuwg, r, guug, gwb, wbgr, bbbw, grwgwr, gwg, rurur, bubu, rguu, brb, ugbbbrr, wugrrr, bbw, bbru, bgrbubg, ubw, uruu, wgrgrwwr, bbwrugu, gbbbwur, rubbwbuw, wuwrwbu, brwbru, wub, rbrg, wwbwrbu, grbbu, ubbbwb, urw, gwuw, uu, urwugu, bgw, gw, rbwwwurg, gubr, bbu, rur, rburwgr, gwwgr, gb, rbur, rbw, ug, wurur, gbbrrb, ruuuwugr, wwrgug, gbrugu, wrww, wuwbgw, uwwwgrgb, gww, grwwu, ggu, rrurr, bgr, ubugwu, wwgwur, urrrbw, bwr, wrbgbu, wrwbb, gug, bwu, ruurw, rw, wbb, bbwgwrr, wgg, ugwu, wr, wwwr, w, wbwbuw, guugg, bug, bbbb, brbb, brur, rbg, wuu, wurwgb, rru, urrrbugr, grr, rubu, uugrwbb, bgbrurr, wgw, gub, ugwwgr, urwr, wbwbg, wrrb, rwrgg, ggwgrgw, bwbu, uwb, rg, urr, brrur, wg, u, bu, ubbbrw, brgbbbbu, wgrgu, bgb, ubu, uugubg, bub, rwrr, gggbrw, gwwrww, grub, urgrgw, bru, wgwgb, wubrg, ugrwwbb, wbgwrru, gbwb, wugu, uwwwg, ubr, gwr, bguwb, guwbw, wrb, grw, gwwgbb, wbwwr, grbwub, ubg, bwbgw, rwu, uurb, rbwgur, ubbr, grrr, ubwg, rgwuug, rgb, grrbub, bwb, uwuuubg, wrugb, brurub, wurg, urur, uru, bwwrrr, urwub, uwr, brr, ggg, bbg, bgg, guuruuu, ubwb, uburgbb, gbgrgug, rbwr, uwu, rwwbuugr, ubwwg, wwr, brg, wruububu, bgbb, ww, wrgbu, ugb, gru, bbwgbr, brw, bwwbb, wbr, grbg, wbbb, brbrwwbw, gbgwrrub, wwu, wgb, rruruu, wuggr, urb, bwg, wbg, rbu, wwg, wuw, wrbbugg, rb, rrgrbrg, guu, bwwugr, rwrb, gwbrb, wrugub, ubbrwu, uggbb, ggr, wwru, rgbb, bbgbgrr, wuruw, gbg, ubbwrg, bur, wuwuu, bgu, ruwgur, gbu, wwuwb, ggbgg, ugrbb, bugw, rggrb, rrw, rgwru, ubru, grbbuw, wbrr, wruu, ggw, wbgguuw, rggrugw, gbgwwg, gwwru, gur, rr, wbgb, burbwr, rggu, wgwu, rwuug, gwrbr, wbbwbgb, wurb, gbbuggg, gbbgbg, ur, ugwwu, wgu, bg, urrbgr, gurwg, bbb, urrr, bwurbrr, gbr, gwurb, ugg, uwbbrr, buggr, rub, bwrgbw, uwbb, ububggw, uuwrbbu, rrrwr, ruwgub, bugb, wwrw, gwbg, wwwrrr, urgggwb, gwuwr, www, g, wgrg, wbuwb, grwrg, uuw, wuwgb, buru, rgr, rrgu, urbgb, wgrr, gbuwww, rrgrgw, rgbrg, gugbuw, rrb, rrgbug, ugwbrgw, rwuw, grugrrbr, gbgww, ruw, wubb, gr, ruu, ubbg, brgurb, rwg, gwu, ruwr, grb, uwg, wgww, bgbbrww, buu, rurbgr, rwbw, gwwr, rwwbbugu, grgbr
+
+rubbgwuwbrwgrgrgrbrbbubgbggrbwrurwuggggwrbrgwbrrwb
+urwgurrubuguruwuuuruwbbgrbbuwrbwrruuuubbuububuubrw
+gguurrubwbuwgrbrrurrgbgburbrrurwbrrrubburuggbbgb
+rgbuuwwwgbbwgurrwurgwgrgrbbbuggwgwugbrwb
+rwggurbrgwrrwuururwwubgrurwwrubgguububururwb
+ggrgrruwwwgrwuubgrggbbwrrgbrwrwgwwububrubguurggbrwbg
+ggurrgrggwrwruuwrbrgbrubrbuggugwgrwgwurbub
+wwwwuburrwbwugguwuwgwwrbggbwuwuuuuruwwurbwurgbwbggrr
+urburguuwwwgrbrbgbbgbgrbgbubguugwubugwgrruuuugbbbbgubggu
+guurrgwububururwgugrguuubrwrguurbuuuugrgbuwru
+urwuwuuguwwwgrgbuwbgubwuwuurwuwggbwgubrbrguurrgrwb
+bwwbbwuwbubgrbbgwuubrrbwgbggubbrbbwrwuuuguugwrwbub
+wwwguwbgrrgbrgggwrgwuuwwwgwgwrgbrbgwgwruuruguubruug
+gruuwuwbugubrwbbubrubgrruubuwugurbggrrbbbbg
+wurubbwuggrrurbwwgrwubgbwguurbrwgwwwgrwuuuggwbguwwr
+ggbguwrwguguwubgurgggrguuwugbuwbwwgwburgbwwuwgbrwbub
+gwugrwruguwuugubbbrubbwbuwwwrgburrbbguwbgbgwrwb
+grgugwwrgggbbbubububwuggrrgwruwrubwbrbbgwrwrggbuwrururrrrg
+guwgggwrwrggbgwrrubrwburbuuububrbwrrrgurwugwggr
+wuwwugwrbbuuburuururuwwrggbubwwugbuwugbburrwuwbubgbw
+ugbggwbgurubbwrgwgggggwggrruubrgrwrgugwwgurrrbwbrwwur
+wurubwrrbbgruurbbgurbbubuggubrrwwgbgwrwuuuwrgwbbrbw
+rwwbruubgwrrugggwubgwwubwruuwggwrbwwbbrrwb
+ugwgbguggggwwbwgwwuggurbwwgrbbuwurugwwrrrgugburruwb
+brrrugbwrwbwwurbgbwwuugrbwbrgwgrgrbgrurwgwurgwruuguwbrurwu
+rruwrrbgubguurwwugurrgrwbbuuwuburrbwwbbrggwuwr
+uuwrburgruurrbuwwguurwbwwbwggrbubrwuuwuuwrbbg
+gbbrrwgggbwwggwgwuurubrrurgwgwgbwgubwggrrbggug
+wrwuggugbrwuuubbgrbugubbgurgrrburgwrbugrwb
+bbbwgbuwbgrgggugrugwwwbwgrrbbbuubuguuugwburrrwrggwrrruwug
+urbwwguugwrgbrrrrrrrbbwggrrubwgwugbbbuurugggrg
+uugrugurbbruubwgbwbbbwubbrbbgwuuuwggwwwuubrrrwuwubrgrbrw
+wbrugrwrwrrgugwugrrugugwubugrrrwbrwbwrggbwurrbgubgwbgbbgrwb
+uwwbbubgrrrurgwrbgurugwbbrbbburggguugbwbrbgwbubuwbbgubgwg
+rrbwbrbruwurwbwgggwrguwbbubuwuwurwubgwbwwgbubggwbbubbrbr
+wwrwggbwwwrgubwrbwuuwbuuuwbrgwwrbrbrguruwrwbrrgrugb
+wwbwrrubbbgwurbrbubwwbbbgbrbgbwbbuggrurbrwgwbubguurrwrwwb
+rwurrgwuugrubggwbuubrbuwrggguwbgrbbgrgbbuwggbgwrbwgwbuuru
+gwrrugbuurgrrwgbggwggguwwrrbgrbwwrrgwwbwubwbwrgbrgbgwwbgu
+brrrwbururwwrwwrrgbwbubgbwgrgwwruuuwgugrwwrgbubru
+uugbwguruwuwubburrgbbgbbrwrrbubuguugwgwwbw
+gwburgbrwgwwubugrrrbuwugrbbwrrguwrbgbbgrggggbwuuwwgwgbww
+rwwwbgwuubugurwbwururgbwbwwrwubgwuuruurbwbwgbwwbuwgg
+bwwwbuwwrwgurbbwbguwwgwubwuwgwwubbwwwuwuuubbwr
+urugrwggbbrburugwggbwbbuubbrbguuggwurgbrbbbgrbwuw
+bgrbrbgbgwrrwgugbubbgbrurwrrgbwbbgrwrwbwwb
+gbwubwgurggwbbgwwgbrrubguwgwwbrgwgrgwwwgwwbruwrwbuurwb
+wuuwrwrbugruurrrrgwurguggbgwubugrugwwuguwwruuwbrrrwwruggb
+ugrugbrrwuuwrwuguggwwgggubuwrrbwrugwwuugwbburrbrwb
+wrrggbggbrgurbwguurugbwgrgwwgbwbgrbgwrbrwb
+bugubbrwbuwugwwrwbgwugbuuubrwbugwrugggbwwrbgbwuurgw
+bwrrwbrruuuugugggwgrgrwwrwwgwwgrbggwruwrwwwgrurwgggwbbw
+gwwuwbuwwgwuurwwwgbruwuugruuwrgbbwugwbbwbguguw
+uwrwwrurwwuwwwuwuubbbwbbrrwwbrrgbwbwggwgwruurrwb
+rguuugbrbgrbwbbrwuuwwubwrrwggrwrgwwrgwuubwgbbwubbwbgbrruwu
+gbgrgrwgbbbrwgubugwwuuwrrgbwbwgbwuwrugrbururbwrwrwbubrr
+ruwrgurgguuurrggrurbuurubrbbguwbbrrbuuuwrgrwb
+guurwgbwrbuurrrbugrbgbbrurbubbuugrgbwugbru
+uggbgwrrgrrubgbbgwubwurgbbugububwrwbrgwbbbwwrwb
+gwwgbbrrurbwwwrrrbruurbruggbrgwbgurbrwggwbrgurbbbwubbuw
+wbgrwbuguguwrbbuurbubgubwgwwbrrrrbugurgggbbgb
+buurgwggbbwgrrbruwuwruububuubrrbrrwrgbwbbwbwwururbgurbrrgrwb
+rbgggbwrugrgwrwgwurggbrbgwgwgwwrbubbrwrbbuurugrrgwbrggbu
+grrbbbwwguwbruwggwruwurrgrbgwubbubggwuugwubuwrrugurwb
+rrbububbrrbbuwwuuwggbbwuwuwwrwgwwgwgrburbgrgrw
+uuurugrbrrgwbrrggurrbubbuwguwuwgrurwbrbgwurwurw
+rwubrwbuuuwbggrbwrwgwwrgrbrrbbwgrrwrwrrgbruggwwwgbbrwuuwrg
+bburuwbugrggrwggrwbgbbuurwubuuugrbrrwgwgbrggrgggwbuuwbwbuw
+wrbrbugwgrbuwrubwgwuwugbrgbwrwrgwururwrrrggrgurrwb
+rggrbururgwuuwgbuwuwrruguugwbgubuwrubuwbrggbggbggrwb
+gwurbruwrrgrrwbbwuwbgwrgwubbbuburrgbwrwrwb
+urbrugbrwurgrgbrruwrbbrgwbrrbrwurbbbugwuugrwguwr
+brrgurwwrguuubrggbggwwbgbgrrwwbburwuwrrwggbwubrrbggugubu
+rwgwwuugbwrwrguwrrbrgwrurbwurrggwuwuwbgwgwwguurgrwb
+guggggubguggwugbgbbwwgurubwugrbwgububbggbbrwb
+wgwrguwggbugwwgrrrrwgwwwwrwwubgugwugbwgwggubwubrwb
+grwwgbrwbubbwrwwwubugbgrubuuwbgurwurrugbwrgrrr
+uugwwbuubggggruwugrurguwwwbrggggggrwwwrbrgugu
+rgubgwbwurrguwgwburwubgrgbubbrbrruugrugbgrwwru
+wbwwrubbbguggwbuugrgwguruuggurwggrrbruwbwrgbuw
+rgugbrwuurrrrrurubrrgguuwbrrwruggubbbubgbwguurburggbrwb
+rbuuggwwurwuuwgubgrbrruwrburugurwuubbburrguuruwr
+rwurwrbbubgrwgggwwwbruuubwrwuwuwgrgbrgrgbugwrubrrbwbwbwrwb
+gwrgbggrwrgbbbuuggbgrrgrrrruurbrwuugbubgbwur
+rrurrwuuwuguuwbububrrwugbwuurbbgguwrwrrgrwwgbrggrburwg
+ubruwgwbrubwrgbbrbbubggggwrggrgwbgggbgrburuwrbbrurgrgbbww
+wrwgubgbwruugwubbggwugbgwwugwrbruuuwrwbbrrrru
+rwubrrgbwrbgrbrwggugbbuugrguruwwwugrgurwb
+wrgruuwrgguwwbrurbbugbrgruwrgrwggrbwwbwbgwrbrwubwubrwb
+bggwugbrbwbgugwuwwurrwrrrwrgrguwuwurwguggwbrrbugrwr
+ugubbwurburwrrbbbgwrbgwuwgbubrrgwgubrubrgrbb
+gbwuggwruuuguurrwuurubrbwwbbwwuburgwgwurbbubg
+uubwugrgburwubbbuururrwrwrgwurbwrrwurrubrwb
+urbrwgwbuugbrwgbugggbbwwbuguuubbubwbguuubgbrrbububrru
+rrbwwwbgrgwgurwwuwrbgwrwgrruwbgwbgugurwgrbugrbgbrbruw
+ugrwbgrbrburugwbgugwugurrgwgrgwwrbgguwgrwrwb
+wwbgbrgrwgggrbrugwwrwrbgubgrwguwbwubwwbgguggbbrgugbugrbbr
+ubrwgwuwguwbwgguugrrbwuggwubbwwrrurbwruwbuw
+gubrwwrbbrwwbuugrbwwugbgwwbbbugwrgbwbwwbwguggb
+rurwgbbggugrwbubugrrwugrubuwwwwrwububgwwrwgwbr
+wgbbrbbubgrrwwwgugugurbrubbuwbgwwwgwwgwrbwbw
+ubgubwgwrwbuubgbbgrwbubugbbbrugrgwurubwgubguwugrrbu
+gruuuwggwwwguwwguubggbguguuugwugwwgugwrwb
+wrwbrgbgurwgbrbgurbbbggrbgwgubwbbggwrbwgbbu
+bggubwbggbgrrrrggwbwbbgrguurrrggwbgurgrgwbuwbwurg
+wuwbggrwwwbubrbwgrgrwgbrurggwwwubwwgwgbwuwwuguuwwgggbb
+rwrugrubggrbururrwuwurbrwbuuggrbrbuugrwubbruggrbwuuru
+wbrgggbwgrwwubbbguuuugrburubbrbrrrwubwgwguu
+wrugrwruurrbwwwurggwbbwbuggrbwuruugwrburrwb
+rburbbrwwrwgwbrubgwgwrwgrbwurgubuguwwwruuggbbuwwwggrwb
+gwuugurgwwwrwwgbrbwwugwgurwbbbrwuwwwgrgbwbbgbbgruwgwwgwrb
+rruwgbbwwrugugugrwubgrguguuwggbrrbrbubbwugurbgbubb
+uuubwuburgrrwuugububuuwwrwrgbwbbgwgubwwgwgubrrbgbruggbu
+wgrwuruuurwwbrwbwgrrwwrgurrbubwrwbgwrggbrrgugbuu
+ugwbrgbbbwrgrgwbrguwrbrrgggbbuubgwbwgbgrwbrrwrrrgbrbgg
+rgrggguuguwgbgrgrrgwrbbwbgurrrgwbwwguwbgggrbugugrbrurwb
+bbwuwgrbbbbwrbrgbrgbbbburgruggrrrrbwrbbrwb
+wbwuuwrruwggubggbgwbwwbggwbgbrrruggbwrrrbrwrb
+wuubruggbruggbwbwuuugwrrwuwrgbwwbwuwwwrrgwrr
+uwwgrbuubwbwbbrwburbrggburubwgguuwbwgbwburggwrgbrwb
+ggbrubuwuurubruuubrbrgwuubguwbgbgwrrubrrrwb
+rwgbbburwggwwgbbbrruuurbgrgbggrbgruuggbrgggg
+rwwbwgwgwwbrbugbuuwbgggggwgrurbgrgwgwrgbbbuugbbgruwgwwwbg
+rbwubbwuugwggrruuuugbruwwwwuuuuurgbgwwwgwbggwgbrurww
+rwguwwrgugrbuwrwwbbugurrrwubruwugbrwubrwrgrbggbgr
+ubbbugrbugrwgwggbwugwwbgwguubugbggbggrbuuwwbbbbbwr
+gburuuwbrwrguwbrubgbwgruuwrwgbrwbrwwgwbgwggw
+ggwwwguwgbuwrggbugurrrwwwrbrrbgurbbbgbruwrwwrbgrwwbuugrwb
+rgbgrbrrubwuggruuwbgggwguuwwwrrrwuwrrgrubbbgrr
+uwwgrrbugrrbwgggwuruwuuwggwbgwggwrbbuwbrrruubuguwugbrurwb
+brwruwruwggrrubrwugbgbwwuggggruubrruugbgurrgwwugrurbrr
+rgbbrrrbubrgbbbuuggruuurguubwgwgrwwgrbbwruwwb
+rrbuuwgbuwwwbggrgbuurrbwwbwbwbrwwubuurrggrbg
+urgbuwuwwugbrbguugbrbbggwggwgburgwgrwgurrbwwgrbbgw
+uubrrugwggwgwbgbbwggwrrwbruwbrwuurgwwugrwgrwg
+rgrguwguwrgwwgruggbwwbugbruubgurgrwuwrugbbggbuwrrggrwuug
+uwubrubgbbwrgbgugwwwwwubwwubrburbbuurgwrrbwbubrbw
+rgrbbwggrbgrrggrgbububggwggwwwwbrubguwgbuwbruwgugrgwrww
+bbrwwrwgbgbgbrwwubbrgwuruwbrbubrrburuurwb
+uuwgwgubwwbburwgrrbwgwrugrbwwgbggrurgwbuwru
+uuggrgwuguuwwrbwrbuwrbrbgbuburuwwbbgbggbbugwwbu
+bwbgwgwbrbbbwwbwrwgwbwgurggguwugrubrubrbrbuwwuugubru
+uwuwrgwuubbruurbbbururrurrrbrwggbgbbgwrbuwubgbrrgwuurwb
+bwgbbrgbbbbuugurgrburrrugbuubgbbwwwwgbuuwuggbgwguubb
+uubwbuurbbwgbrgruwbugguguwbubbgrgbbgwbubggrrbwrwb
+rrrguwbgwuwwbrrwrrwguwurbgbrburrwgrrburgwbbrruwwrrwbwrb
+rruguburbgwgrgbguggggrugrgwbwwbwrbggwwgbruwuwrwwbubgburgr
+rurgbwbugrbrgbgrurruwbubugubbgwuubgrwgrwwwgwbwrwbbwb
+bbgbwggwgbbwbuugrrubbubgbrbrgubrugugrwbrwwbg
+gwgugbburwwwwgbwwubwrwrwuurruuwuwwurugrrrgb
+wwwrrrgruwrrrwuubwbrrurwbwrwrwbwggggrrbwuwggg
+gbwrwguguggbwwrrbwgwwbwgbbbgwbuwuwrgwwrgbwuurb
+guguuugbrbgruwbwbubwurrwggrubruwwggbwwubguub
+uubbrubgrwwwuwrwgugbwbgurgrbbrugbrurguwrwwbbuguuuburwb
+gubbuuuuubbwubgrwwguruggrbrgrrubuuuurrwrwb
+uwwgbgrgrbrrgrguwgubuuwbwgguwbgurbwugbbrgguw
+buwbgrggwwubrgrggbwurubgrbuuuwurrbuwurbbbbbrubgbrbuwwwrw
+uwbrrbbwwruurgrrgrwruruwuubrgbrwwgwbugrbbrggrbwwbgrrwb
+rbwgwbrguubbbugwguwrgrgbggbrruggrwubrwbgbwwuuwrrgwg
+rbrbbgwggwuuburggwwrruruuruggwubruwwbrurubwbu
+rbubuuurbwrugurggbwwbugbguuuuuwrubbguwrwb
+bbwbubwrbuwgubguwrwrwgbgrrwwruurwwrbugrrurwb
+bbuguurruwrrbguuuugwrguubwuubrbggrwubgugbwbwrrurugrugrwb
+gbuuwurrbrwwrubgurbuubugrrbwubuurwuwwwgbbgbrwbrrrubggrwbgwb
+grggrugrrbruuwbbbrrugbbbbuwbrwurrwgbwbuwrwb
+bguurbwgwgbgbgrgrbbwgbbwubbwggrbubrwrbrubrbrgrwbburwb
+grrrbrrwubuuggrgrurruuwwubwuuwubrrbburbrwwggrwgurgwgggwr
+wbgubuuubwuwbrububrbwgrugrrbrrwbugguwwuuugu
+rrgwgrguwruwgrwwrbgrgbbbbbwrgbugbggbrrwb
+gwbrrgrruurwurburwbgrbggruuurbrbwubguwgrrburbgwwwu
+bwwbugbruwrrguubruwbruuwrrwuwbruwgrwgwruwurgrbgurgruguwbg
+brgrrbururwguwbburgurgrggbgubuwgruuuurbrrrrwugg
+uwrbugwwrwuwgwwbuugbuurbwwbrwwrgrbggbgwwwrbrbwrrubbgrugw
+uuggwbwrrwgrruwgggbggbgbubgwgbugwwrggrgbrgrururgugur
+bwwwrugrrgbggbggbwubburrgubgwgwwrbwwgwbgurw
+gburbuurwgbwgwwgggwbguwuwruububuwububwuwbgg
+gbwggbgguwggbgwwrurwggbuburwrrgrbgbbuwuuuwrggwggwb
+gbbwwwgbgwurgrbbwbgguwrwrggguwbugwbrgbwurgwuwgrrug
+rgbugwrgugwbbbgggrwgwubbbwuurbrbrwbrgrwuurwgrg
+ruwbuwurgwbuwrrrgwbrwrrruwwgggwugbwwrgruwgwubbgrwrrrwu
+brrbwbbgwwwuururbrbuuwwwuguwwburbrurwuwgbwrbuubrbbww
+rrrwrwugurubugbubbgwgrggwbbggbrugwbwrbggburgbrwr
+ubrggrgbgwgruggrgrrwbruubwrrurubrbgwrwbggbrgbbrgwbbbr
+ggrbbggrurbrbruwwugwrbrwrrbwgbrwwgubwrbrrgrbbwwwruwggww
+wugbrbgwwwwrbugbwwrrburuwrbruruwuuuurbuwwwbgrgbrwb
+bbgbgruurgbubburgwruwgrwuuubbwbwgugwbrbuuwwgurrurgwwrrb
+wwburbbgbwurubrbrurwwgrwgubbgwbgrguuugurbwuwbuwuwuru
+bwrgbuwrrrbubbwugbbrrgwgrbbbuguugrwbrurwrugguubbrubuggrwb
+rgrwugwgbuuwubwrguuburuuuwuwbgguwuubggrrbugrbugwbgwwubwwbb
+wbwrgurwrwrgggbbgggwwrbrbgurggubbbgrgbwbug
+rbwbuwgurbbbgwuubwbgrwwubwbbwbgggwurbbbgbuu
+wbburugwgrwwwgwwrwrbubrwuwrbgbwgbbwbrrbwbubbwbruubgrug
+wrwggwgwwuuubbgrrwggrguubrgurrwuurubwurggwbrbbbugwuuwubwgu
+bggrgbruwguurrurrbwuuwgugbrbwbuwwgwrgurggwburbbwgbuw
+wwwbbugrrwwbrbwwgwububbuggrgrurggrwgrurruggbburwwgwurwb
+rbrrwubgrwrbrbrggwwrurrwbwrurbwgbubggbrrrwwrwb
+wuburwgwrwuwggbwwrgwwwugbwbggrurgbrurruwburuugwrwb
+gwbwurbrbuurgwwbuuurrubbbrbwgruwuwuuuugwgbbb
+wguwrbrbrgbbbggbggbgbgwgwbrggbggwguwurwwbbwbrrrrbwrwgrwb
+wwwbruruubrurbugrrwwuburubbguwwrrbbwbbbrgbbubuwrurugr
+brurrgggruwgrburwuggugrrbwbuuwbwuubgurwubruwrgwurbrwb
+gwrruuwbrbwwbbbuwbwgrgubgggggwubgugubrbgugwuuburubugruwu
+uubwruurruwwbrwburwggugggrguuurrgbbwbuggbwbuuurbgrwb
+ggwrurbgrwgbbbruuurbbuubrwururgwwbuuwgrgwrgbubugrbrrgg
+gubrurubwbrgrwwgggwwbwwguubbgggbggwbwwrguwrgwuggr
+rwwugrbggburrrrbgwwgwgrurbbrguwrrbbbruwubgrgbrrwb
+bgrrrbbgrguwgwwgurwwwrwugwwgrgrrwwguugbbruruuuwburbbuur
+gwrgubrbubbbbrggrrbgwuwwbgbbuubugwgrwubgbbr
+bwwwgwguwrrguruugwwbwgrgrwwbbwbrrgwbburuubbugbbrgggw
+wburrbwwgubwbbwrbrgrwrbwugwuwwgwuugwwwgurgrguwuwgrgruu
+wggrrrbgbgwurwrrwbrubbwbrwgrrwuugbrwwuwgruwwurw
+rrbwggggurwrbwrrwubbrrurwwgbbrwuuwrruuwbrwb
+ugwwwrbrbugbgrbuwbubwuggbwwugbgwrrwurrrwrrbgwrub
+gbwgguuguuuugwgbuubggwuwbgrrbrbgwwbgugguruwrwggwwrwgwgu
+wuubbbugwgrugububgrbgwugrurruwbwrbggwbgbbgurgrgbw
+gwugwbbrwbwgwrwbrgurbwuwuugrrrbwwrburubgwrwwbbg
+wwrgrrbubbuuwwbuwgrrwrrgggguwrrubbugrgwwbbug
+gwubbruruuuwbbgrugbbbgbgwurwgwgwbwbwugggugbwuburwb
+grgwgwrugugbgbwwbwubgwgbrgwguuwrrwwwugbgwgbgwruwwrwgwwrwb
+rwrggugrwbbwgbubuwuwrrrgguguwrggbwbbwrrwb
+rbgbwuwbwrbbwbbgugwgbbbwbrrrugwbrbubgruburwgwrrwb
+wrrgbbbbwwuwgrgrrrbgurugbuwuubrgbgrbbbrrwb
+ggrbwgwgrugrbrrwgugwguuwubuwwrugbbwwbbwuwggwuu
+rwuuwwbugruwrruubuwuruuwubrugwrrwgruwrwrubbruruuwwg
+rwrwuwbuwugbubgbbrguwgubuubbuwbwbgurubggbgubgwu
+ugrrrruuwruuguwggubguwwwgrwuuwrwugwruwgrrbbw
+ggwgwgurwrggrrwgwruuguwrugubrbuurwwruwbgrgrwb
+rwbrrwuwbbbgbrrbwburwbbgbggwbbggwggugggrrrwbugg
+ugbruwrruwgrbwuggrwwbruwwubrurrggbubgubugbgruugrrwb
+wwwuubbwubwrubgubwrugrurbugguurburrrrwgguwwuggugurguwurwr
+bwwbrruwbugbwguubbgggbrwbbrurgwbrwgggbgugbbgrbww
+brgbwwubgubguwugwwuruubggwwuuwgwgwggbbwwbubbbggu
+rbbrbbrurbuwwwguggguwgwggburbggubuwwbrbbubruuwwbgbru
+rwuuugbwgwuugurbwrrwwbugbggbuururrbgwbwuuurggrurbgwbgggrrwb
+bbgrgwwugwbwugggbugbgubgbgwbbuwrruurbwurwrgwurwb
+bgwgguuwggrbbugbgwwwrwurrrbugrgguugrbgwbgwgwggruwwggwwgrwb
+urrwggrubuwgbwggbbuwwbwbbwwrrgwrwbgurwurru
+uwwbugruuuwggrrrrrbrrrbrurgwrrwwrrwbwbruwbbbuggwuu
+wrururubbrugbggubggrbruuuubuubwuggggwwwubbwbbwbgbgbbgurwb
+ubrubrbrgugurbuwrwuuwgbgwwrrwrrbbgwgbwruwrrrggggr
+rbwguruwbgbgbbbbubbrrrugrruggurwwgrrrbrwb
+rurgwubwbwgubwrbgguugrruururgwgbuwwurgugww
+bwugrgruugguguwbgrbbbwuuwrrgwrrwrrubgrbrgbrggbww
+rrgwbrwggbbgrggugurwgrgbrgwgbwrruwgwggwgrwuwrwbburwwbu
+uurbwggwubwgwwguwbbgwwggugrrruggbgwbrrgwrr
+grwbwbwrgrwrrubbbgwgrbbwrbgrurwrguwwwwggrbwbrwubbwrggr
+gbuwbugrgubbrrbwwrbgwuwrwrbrbrwwbwbwrwuurrruurwb
+ubrwurrrwwrbgwwgguubuwwgwbguwggurwbbgrugwbbrubug
+rbugbwbguwggwwrwbbgwwuuruwwbrububbrurbubrgwwrbugugwbubggru
+uuguruubgwwrrrwwugwurbgwbubrgrurrgwuuuuuggwbgrwbugu
+gwwbugrrburuuwbwwbbugguubuuwwbuwbuwgubuwbruuugrgurgbuuubbw
+ugwwgubwubbrubbrugbbbrurwgrgubgubugururgwgwwburgr
+uggrgbruwrrbwrwgrruurwgguguwrwrwgbrggububgwrbguwbugwwguw
+gruruurbgwrggggbrrugrbrgubrurrgugbbgrbgrwwugbrubw
+ruggggwgbubuuubbgbburuwwgbbugrwubbrubgbrgbggrgubrb
+wrguwbuwbrrbbbwbwrbgrrubwggbuwrrrgugbbrwbrguugrbrwgbrgg
+rrgrwbgurgbbrgrbgugwrgrruruuugrgrrbbrrrwb
+uuggrwugruuggrurbwggwgrwbwrgrbbbgbwbubugwg
+rwwwrwrrbgrrgrgrwrgururgwrwburubwgrguwbuwwrrugugbbrwb
+bbgguuwwuwbbuuwgwgurrwrwgbbrgurwgbrrbwrwbrwrbuggbwwrwrbuw
+wrwwbgwgwruwrubbwrrwurwubgrrwrggbbgbbbgwwbgwggrbbwbrbbgbg
+wgggrbrbwuwgubrguubgrguwrwuuuwbwwubuuwgbgrgbruubb
+uggrwrwwbguwurbbburrgwgwururgwrgruwbwuubugubrurbuubrwrbuurwb
+wrugguwugrgbuuwrbugrubrggggwwrbuwuurbuwruwwuww
+wugwrwbbbrbbbrggrwbuwrwgwwbbrbwwgbruwugwruggggbw
+uguurbwgwbbuuguwrwguubuugwurbgwrrbgbrrguwuwug
+uwwuubgrrwgwrbbrgwwwbwugbbggbuuuurgubgwugrbgurbbwug
+gwuwgwrrwgrwbwggugrbrggubbuburbbbgugrbuwrurrwbrwgggr
+wwgrugrwuguwbruwugguurguwrugubwubrbgwwbrwbrwgbwrgwrruwurbr
+gwgburrgwuurwburubuuwwwwgbbwbggwwgwuugrgwrbwrrw
+rbgwgbbruuwwugugugrubbuugggwgubrguwwgrwgrrrgwbggbuguwu
+rwwrrbrggruuubgruburgwubrrguwbwwgrgbwggruggwg
+burgwuwugwbbbgrwgrubguuwugrbrbguubwwwrbbrwbrrugubuwwguuurw
+gburugwwrwrrugugbbubrwrburrugrubbrurbrwwgrbbww
+wuubbrbubbrbuubuwuwwgbuubugbrrgrugwrgwgwwwwwwwuurb
+wuwgrrgwbbgrurbrgrrurbbgwuggggbgwuurwggurrwb
+grbbggbgrugwbuubruwrgbwrbbwuugwrrugwrggbrurbwrrurbrwb
+uuubbgrbwrurbwbuggbbgrwuguuwubrwgbgrrwurubbrwgggwbggrwb
+urgwrgbbuwwrbrrrbbrwgwugwwrgrugwbgbbgrwb
+wgbrwggguwwruuwwggwwrwbbbugbruwugbbbuuuwwgurrrbwwbubbwgburwb
+buggbbgbgbbwwwurwrwrwbruwgwbbgrruwwgruubgwwwuggur
+rbgbwubgbbgrurwwguwubrwubbuuggrugurubwuwgrwgubgugwguugrgw
+urbbgurbubwwgbbwburrrbgrbwwubggwugbrrbugwrbgubrb
+wbrurrrbgrgbgbwwwrwurrwbuuwrwwgrburwrrbgruggubgrguwgbwur
+uuururbwrrwgwbwwrwwgwgruwurrbugwrgburgwrwrbrbw
+rrwrurbrgubuguwurwgururugbgrbgubrgrgggurggugurgrbbuwgw
+rrwuwrugwwbbubbrbrwrbwbwubgubgwwgrbugwgrugbgb
+grwgbggwwwgwrwgruggbbgwrgwubgwrwguwgrguuuuuwgbbubgguugg
+rbuurugruurwuwgburwgwgugrwgwwgwwgbrrugguwruw
+urubgguwggurwbgrwwbubguwggbbbgrugwgrbgbrwgwrrbrbbrguub
+wrbrurgwbubbwbbrwbbrugwgbubrwbgrgwguwuugbgugrgbg
+rwuruwurgugggrgrrrugrurgggrrubguurbububugugbwurwuwwug
+uubwuwrwwgrbbwgrrgubwgguggbrrwuruuwuubgrwuggbgruggbrr
+uurbbgrgbrgbbgrgrbwwugbrrubgubgurrbbrrrbubr
+guguggbgggwbbwrwrbwbgggrurburgurgbbwwgruru
+wbrrbbuurwruuuwugrgubwuuurbrwurwurbwwbwububwbbbrwb
+ubbrwgggwrwbwwwrbgbrrrbrubwrgurgbbgbuuuuugbwgwgrwuwwbuu
+bwrbggbgrbbgubbwrrrubgwburgrgrrruurwuuggbguwbwwurrwrwb
+gwuguuwbruwuuggrbrrbuwurbggbbwguwwgwwbgrurrwb
+rrggbbgurwbbbgurbgbggubgrruuwbrbwgbrguwubbggguwbgruwwrwb
+uwugbwwwrbbruubwbrgbuuubbgrubururrbrrgwwbgrwgbrwruwrwb
+bwurruruwuguwrbuuggbwbrubbrwuwurbgwwbrgurgwuggr
+ruuuwugrrurbwrgrbgurbrwbrbubbwwuuwwuwwuugugbbgrbggwr
+uugrgwgwwgrbrubbugbgbrguwbbwwgrubbbgbgbruwugrrwb
+brbgbwwwbbuuugrwrugbwurrgggbwwuubwruuburrbrr
+wrwrgwwrwrugrwrrurbuuwgurgbrgbrwwbwrggwbrbbuugrbbwugrwb
+rugbbggbuggwgwwuruwrwbggwgburuubuwugbggbrbgubrwgr
+ubrrwuwguwwrbgwbbbrrgrggrgrgwgbrugubuwwwwuwguuurwb
+ruguguwuruubbwwwgwgrrrwrwwuuuruuuwuwgwubwwrwu
+brggrwrbrwwwuwwbwrgwbwurbuwwrbrgrrugbwugrbguuwb
+gwuugwuuuggrgurbbwggrubbwuurruuwrggrggurgrrwrrgbrb
+ugwggbgbbrrwgwrbuggurrbuugbwrurbbuggubwbgwgwuwgwrrrwubuwurwb
+wwuugrrggrbrrgwuuugbwbwrurrbuwwwubwrbrggubbubbgrrr
+ggwuubgurubrurbwgrwwuggururbrgruwgruugugrbwgrbubrbrb
+rwggguwwubburgwwuurrurrrgwgbrgbbbrruguwbwugguuurr
+rrbwbrrwbuwwbwrrbbbwwubuwgurrguwugguwrbuwuubbwuwrbggbuu
+grgrbggrburrbgwbwbuugugbburbrwrrrguuwbugggugrrrgrwrwb
+buubrrggburbggwgwgrbgurwbwwwubbwbgbwwuwbwwrwb
+wguuurrggwguurburgugugbrwrgbwrrwbgrugwuugbwgbbuubggrugbub
+wbwgruuugggrrubbwrwwubugguguwwguubwurwgwwrbgubwrgbbubrwb
+ruwrggugbbbbgurwggruuggwwggrwwrwbbbrwguuuuug
+bggwwuwgwbuguwggrgurbwugbbbuurwgwuggubgrwbwwwbwgrrbuug
+rrgwugbuwugubuuggbrwwguurwuwugwuuuubgrwrrwrbgrgwbuggwr
+grguwrrurgbwbwrgwwwrggrwbwgbuwbbbwbggrbrwbbrwb
+uubgbrgrwbbgwrbrwwgbgburbuurbubbguuwbgbuuwburbubggguug
+gwbgwrbwwwubuwwrwbbwrrrgwuwbrubwbgggubugbwwgggburrbugrgu
+bwgwguugggbrrbuggwggwgbrbugurbwwuuwwwugbbubbrwb
+rwgwbgbwwuwrbgbgwbrwuwruuubbrbwwuruwbwrbrwrwrgru
+wwrbwwwurggbgggugwuggubbbwgrrwrbwwuugwrbubwgrbgrrr
+ubrubggrgguugburwgbbrwurbrburuuwwrrbrrwwbgwbgggwugurugwwrwb
+gbggrubrgubgubbwwwwuwrbburrgrwbrgrwbrwguuwwuwrgguwrwb
+bbwgbrwggwrbwugbgubugwwuwwggbgubwubgggwwrbgrwrwwgb
+uubrbgbbguugrruurbrwbbuuuubbwwuruuuwbbgwbgrbwrrrgb
+bbbwugurwrwurgbuuugrrruubrwrgwguwubrurgburbgrrwrr
+gggwwgwubwwwrrbubuuuggrgrgburugbgbuurbgrugrwrgwgruu
+burugbguwbuwgubugubbburrgrrwuruubbrbrwwbwrburubwubbb
+wrwbwrbggggbgbruwwwubuurwbgwgrrgrwubwrrbbggrgbwbwbbbuwbbrwb
+uuurggrbbwubuwbwbwrgrbbwgrgugbrruguuugrgrubb
+buuugbwbbgwrgruuwrbwbgwbbrgwbrgrwruwwwgwruggrb
+rgwrrguwuugbgrbubgbuburgrbuuwwgbbwgurrwwubrgwguw
+ruuwwurgwurgbuwurruurbbbbugrubrrgwrgurgubbgbbwgugrwb
+urrwrwgugrrbbrgggrgubwbrwwgbgururbwruguwwrgburg
+rugrggruuubgguuwwwbgbgbbgugrwgurrruubrgburgrrwb
+ubwwrugbguwrrrbwuwggrwrwrububurbgruwbgwrbbbgrrrgggwr
+wuggwbgwbbbwugrbbwwubgrbwrgrgrrgwuuwgrwgwwurug
+bgwwbbbwrrwugwgwwrruggrbwuwbwwgrwrgrrguwgrurwgurgggrrwb
+guwrwubwrwwwgugguuwwurbgugbuwrrbwrguuwgbwbbgbgurrgwbbu
+gwugguubwruguubuguguugbuuugrrwrrrurrbwgrbwgwugburuu
+brwgwrbbgwurgrugggrrbbwruugrgburrwggwguwuuwrrbw
+bwbugwurgbgurwwrugurgbbgbuurugggwugubrwb
+bbbuuubggggggwrbrgbbwruwuuwugurbubgwgrrguugbwuggrubrwbwgr
+wgrrrurugrbgwbgbbrrgurrgwrurrwwwbgrguuggrgurwww
+gubbrbwurgwwbbggurwgbgrwrwbrugrwrburgrrugb
+uubuubgguwwbrrwwwwubgwbbwbwwwwugguguwburgbrbbbg
+ubgrwugugrruwuurrwguggwuwbrwbwrugruuuwrugwwuwrubuugbrwrrrwb
+wrgwguugruurububuurwurrwuggrrubbrrrgugwuugwurgrg
+bwubggubrrburbrbwggrurwrbwbgbbgwggubggbubrububrwb
+urugwwbubbrrwwwrbrwuwbwurwgrurbwbrurbrwrgrruburwb
+rruubgwwwgrwrggubgubwrbbgwgbguruwwgrgburgwrg
+rgugrgrbbrgwbguwgguguwrrubgwwgwgwuwubwbwrggbwuuuwrrbwgwu
+gwuwbwuwwbwwggbbgrgwugwrgugruuubgwguwwgbbrwb
+bbwuguwwwuguuuuurrbbububurbwruuubugbgrbuwgrururwb
+bbbugrrrbrgburgwuuruwrbwgwrgwgrugbrgububrbwwgrbrgbuwbgguu
+bubwuuwwuwbggrwwubruwbubbwwgwrubuguwbuuwugwrbbugr
+uwrgubbrrgguggubuuwrrrwrrurbuubrgbbbwgrwub
+wbbguubbbbguwuwbwrgwwubwrurgwurbrrwurrbgrbbburw
+rgbwugbubggbrbwgbuuubrwgbrruwggbbggbbuggwg
+rgrugbgrwbwgwuwrbggrwuburrbguwguguuugwgubrgruwwbw
+uuuruwuurbwubrwgwuuwbugrrwggbwwubbugwgubbrwgwwwugbwwrwb
+brgbguwuwggbbwrbggggbrbubbwbrwbbgwuubbbbgwrgwgbbwu
+uggrgrubuuuwruuurbuwwugbwwgwwguubuggubwwugrrwbggwrgubrbwrw
+wbburbgbbrbbggrgrrurwwgurbubwuurwwgwbwrgbguuuwrubwwubuu
+buwbgbrwgbubbrbrgwuwbgbrwburgbbrwgguwwbwgbwbgbww
+gurwggwurgwbbubbgbgruggbrbubuwbruwwrwguggrbbbrggwgbrgbgu
+wbwwwbbbwgruuuwubbrrgbbggwbrgwwbgurbbwgwgwgrbggwrugrugggbrwb
+bbgrwgruggrwwurwwrggbruugbbrgwggrrugrwuuugbrrwb
+wwbugbwuguwgbrwrwgrrbuwgwuwgwrbbbubwwgbrguwuw
+ugwbgbwrrgbwrrrbrwwguggruwugwwurwrrbgwubbwrggugbruuw
+bbbruuwuwwurrwbuwbuguuggurgbgbruruwurgbgbgrrwb
+bggwgrggrrugwwbuwgbrbbgwbbuwwuwbrgbwbggwbbgggugwggrwbbur
+uuurruuuuugrbuwwgrbwwuuwbruggggbgrbuuggbuuuwgrrb
+gbgrgubggbgrgguuwbwbrwbggwurgbwwwbrubwgwrggrbwurggrwrrr
+ggbrbrbguwguuugubruggbgwbbuwwrbuuugbuuwgww
+wurrbururbgrbrgwggwggrgrgrgbgrrgbbwwgbrgwururwb
+uubugrgbrubuggrggrbwbbbruwbrrwugugrurwbgwwwbubgrggr
+rgwwbwgbwugugrwrrwubrwbgwuwuruggbguubbwbugururu
+wbuwrbggrrwbgbrbwwwbbgwbwrrggubrubbwbubrgwrwburbgb
+gbwuruuwuwwwbggurugrwgwubbgbwwwurgwbruwgbgrbwrgurwb
+gwururwwugrrubbruwbuwrbgwrbruugbuuugggwbubwubb
+wgrgrrgwwruugbrrrbwwrwrrgbguwwgwrbgwuuwbgwuwrugg
+ugurwrbgrbubwbbgrwgrwrbgwbwuwubgrbuwwrubrggwuguwbgbu
+ugrrburuwwrrwgrugbruwgwbbubrbuwbwwruuurgbuwwgwgbwwbuburwb
+wurugurbrbubbbbburuubrbrrbwubguwggwubbrbrbrgurrbwwwuggwg
+bwrburggbggbbgbuguwbgwwbbbubugwguwbbgbgwbg
+gbwrbgbgbrugbbguruuwgurwwruggggbuburbgwwrwb
+rubrgwubrrrrrwbwbrurbwwggrrburrugrrubwbbguwbbgrwwrbburrwbr
+wgbuurbrrbgrugwgubuwbgurrwwuwgrbrgrbgwrwwbrururuuwrrrwb
+grwuuggwugwgrbggggbwbgwububwrgwgburrugurbugurrrwrwrububrwb
+bbggugurwurrgggrrbbrurubbwbuwbbwwbrwgrrrubrgur
+gwwwugwuguubuuwgbgruruwguugrbbwgbbwwgrgrwwrrrrrbuwbbwburwb

data/20.ans

@@ -0,0 +1,2 @@
+1445
+1008040

data/20.in

@@ -0,0 +1,141 @@
+#############################################################################################################################################
+#.........................#...###...#...#...#.............#...#...#...#.......###...#...#...###...#.....###...#...........#...#.........#...#
+#.#######################.#.#.###.#.#.#.#.#.#.###########.#.#.#.#.#.#.#.#####.###.#.#.#.#.#.###.#.#.###.###.#.#.#########.#.#.#.#######.#.#.#
+#...#...#...............#.#.#.....#.#.#...#.#.....#.......#.#.#.#...#.#.....#.#...#.#.#...#...#.#.#...#.#...#...#.........#.#...#...#...#.#.#
+###.#.#.#.#############.#.#.#######.#.#####.#####.#.#######.#.#.#####.#####.#.#.###.#.#######.#.#.###.#.#.#######.#########.#####.#.#.###.#.#
+###...#.#.#.............#.#.......#.#.....#...#...#.....#...#...#.....#...#.#.#...#...#.......#.#...#.#.#.#.......#.........#...#.#...###.#.#
+#######.#.#.#############.#######.#.#####.###.#.#######.#.#######.#####.#.#.#.###.#####.#######.###.#.#.#.#.#######.#########.#.#.#######.#.#
+#...###...#...#...#.....#.#.......#.#...#.#...#.#.....#.#...#...#.....#.#...#...#.#...#...#...#.#...#.#.#.#.#.......#...#.....#...###...#.#.#
+#.#.#########.#.#.#.###.#.#.#######.#.#.#.#.###.#.###.#.###.#.#.#####.#.#######.#.#.#.###.#.#.#.#.###.#.#.#.#.#######.#.#.###########.#.#.#.#
+#.#.#...#.....#.#.#.#...#.#.......#.#.#.#.#.#...#...#...###...#...#...#.....#...#...#.#...#.#.#.#...#.#.#.#.#.#.......#.#.....#...#...#.#.#.#
+#.#.#.#.#.#####.#.#.#.###.#######.#.#.#.#.#.#.#####.#############.#.#######.#.#######.#.###.#.#.###.#.#.#.#.#.#.#######.#####.#.#.#.###.#.#.#
+#.#.#.#.#.......#...#...#...#.....#...#.#.#.#...#...#...#...#.....#...#.....#.#...#...#.#...#.#.#...#.#.#.#...#.......#...#...#.#.#...#...#.#
+#.#.#.#.###############.###.#.#########.#.#.###.#.###.#.#.#.#.#######.#.#####.#.#.#.###.#.###.#.#.###.#.#.###########.###.#.###.#.###.#####.#
+#.#.#.#.###...#...#.....#...#.........#.#.#.###.#.###.#.#.#.#.....#...#.....#.#.#.#...#.#...#...#...#.#.#.#...........###...###.#...#.#.....#
+#.#.#.#.###.#.#.#.#.#####.###########.#.#.#.###.#.###.#.#.#.#####.#.#######.#.#.#.###.#.###.#######.#.#.#.#.###################.###.#.#.#####
+#.#...#.#...#.#.#.#.....#.......#...#.#.#.#.#...#.#...#...#...###.#...###...#...#...#.#.#...#.......#.#...#...........#...###...#...#.#.#...#
+#.#####.#.###.#.#.#####.#######.#.#.#.#.#.#.#.###.#.#########.###.###.###.#########.#.#.#.###.#######.###############.#.#.###.###.###.#.#.#.#
+#.....#...#...#.#.....#.......#.#.#...#...#...#...#...#.....#...#...#...#.......#...#.#.#...#.....#...#...............#.#...#...#.#...#.#.#.#
+#####.#####.###.#####.#######.#.#.#############.#####.#.###.###.###.###.#######.#.###.#.###.#####.#.###.###############.###.###.#.#.###.#.#.#
+#...#.#...#...#.....#.........#.#.........#.....#.....#...#...#.###...#.#...#...#...#.#.###.#.....#...#.#.........#...#.#...#...#.#.#...#.#.#
+#.#.#.#.#.###.#####.###########.#########.#.#####.#######.###.#.#####.#.#.#.#.#####.#.#.###.#.#######.#.#.#######.#.#.#.#.###.###.#.#.###.#.#
+#.#.#...#...#.......#.........#.###...###.#.....#.....#...###...#...#.#.#.#.#.....#.#.#...#.#.#...#...#...#.......#.#.#.#.###...#.#.#.....#.#
+#.#.#######.#########.#######.#.###.#.###.#####.#####.#.#########.#.#.#.#.#.#####.#.#.###.#.#.#.#.#.#######.#######.#.#.#.#####.#.#.#######.#
+#.#...#...#...#...#...###.....#.....#.....#.....#...#.#.......###.#.#.#.#.#...###.#...#...#.#.#.#.#.#.......###...#.#.#.#.#...#.#...#...#...#
+#.###.#.#.###.#.#.#.#####.#################.#####.#.#.#######.###.#.#.#.#.###.###.#####.###.#.#.#.#.#.#########.#.#.#.#.#.#.#.#.#####.#.#.###
+#...#.#.#...#...#...###...#.........#.....#.#...#.#.#.#.......#...#.#.#.#...#...#.#.....###.#...#...#.....#...#.#.#.#.#.#.#.#.#...#...#...###
+###.#.#.###.###########.###.#######.#.###.#.#.#.#.#.#.#.#######.###.#.#.###.###.#.#.#######.#############.#.#.#.#.#.#.#.#.#.#.###.#.#########
+#...#.#.#...###.......#.....#...###...#...#...#.#.#.#.#...#...#...#.#.#.#...#...#.#...#...#.#...#...#.....#.#...#.#.#.#.#.#.#...#.#.#...#...#
+#.###.#.#.#####.#####.#######.#.#######.#######.#.#.#.###.#.#.###.#.#.#.#.###.###.###.#.#.#.#.#.#.#.#.#####.#####.#.#.#.#.#.###.#.#.#.#.#.#.#
+#...#.#.#.#...#.....#.#.......#.......#.#.......#.#...#...#.#...#.#.#.#.#...#.#...#...#.#.#...#...#.#.#...#.#.....#.#...#...#...#.#...#...#.#
+###.#.#.#.#.#.#####.#.#.#############.#.#.#######.#####.###.###.#.#.#.#.###.#.#.###.###.#.#########.#.#.#.#.#.#####.#########.###.#########.#
+#...#...#.#.#...#...#.#...........#...#.#.#...#...#.....###...#.#.#.#.#...#.#.#...#.#...#...#...#...#...#...#...#...#...#.....#...#.........#
+#.#######.#.###.#.###.###########.#.###.#.#.#.#.###.#########.#.#.#.#.###.#.#.###.#.#.#####.#.#.#.#############.#.###.#.#.#####.###.#########
+#...#...#...#...#...#.#.......#...#...#.#.#.#.#.#...#...#...#.#.#.#.#...#.#.#.###.#.#...#...#.#.#.....#.........#.#...#...#...#...#.#.......#
+###.#.#.#####.#####.#.#.#####.#.#####.#.#.#.#.#.#.###.#.#.#.#.#.#.#.###.#.#.#.###.#.###.#.###.#.#####.#.#########.#.#######.#.###.#.#.#####.#
+###...#.....#.#...#.#.#.....#.#.....#.#.#.#.#...#...#.#.#.#.#.#.#.#...#.#.#.#...#.#...#.#...#.#.#...#.#...........#...###...#.###.#.#.#.....#
+###########.#.#.#.#.#.#####.#.#####.#.#.#.#.#######.#.#.#.#.#.#.#.###.#.#.#.###.#.###.#.###.#.#.#.#.#.###############.###.###.###.#.#.#.#####
+#...........#...#...#.......#.....#.#.#.#.#...#.....#.#.#.#.#.#...#...#.#.#.#...#.###.#...#.#.#...#.#.#.............#...#...#.....#...#...###
+#.###############################.#.#.#.#.###.#.#####.#.#.#.#.#####.###.#.#.#.###.###.###.#.#.#####.#.#.###########.###.###.#############.###
+#.......#.....#...#.......#.....#.#.#...#...#.#.#...#.#.#.#.#...###...#.#.#.#...#...#.#...#.#.#.....#.#...#...#...#.....###.#...........#...#
+#######.#.###.#.#.#.#####.#.###.#.#.#######.#.#.#.#.#.#.#.#.###.#####.#.#.#.###.###.#.#.###.#.#.#####.###.#.#.#.#.#########.#.#########.###.#
+#.......#.###...#...###...#.#...#...###...#...#.#.#.#.#.#.#.#...#.....#.#.#...#...#.#.#...#...#...#...###...#...#...###...#.#.........#...#.#
+#.#######.#############.###.#.#########.#.#####.#.#.#.#.#.#.#.###.#####.#.###.###.#.#.###.#######.#.###############.###.#.#.#########.###.#.#
+#.........#...#...#...#.....#...........#.....#.#.#.#.#.#.#.#.###...#...#...#.###.#.#.#...#.......#.#...............#...#...#.......#...#.#.#
+###########.#.#.#.#.#.#######################.#.#.#.#.#.#.#.#.#####.#.#####.#.###.#.#.#.###.#######.#.###############.#######.#####.###.#.#.#
+###...#.....#...#...#.....#...................#.#.#.#.#.#.#...#.....#.....#.#.#...#.#...###...#.....#...............#.#.......#.....#...#.#.#
+###.#.#.#################.#.###################.#.#.#.#.#.#####.#########.#.#.#.###.#########.#.###################.#.#.#######.#####.###.#.#
+#...#.#.#...#...#.......#...#.......#.......#...#.#.#.#.#.....#...#...#...#.#.#...#.........#.#.#...........#.....#...#.......#.....#.###...#
+#.###.#.#.#.#.#.#.#####.#####.#####.#.#####.#.###.#.#.#.#####.###.#.#.#.###.#.###.#########.#.#.#.#########.#.###.###########.#####.#.#######
+#.#...#...#...#...#...#.......#...#...#.....#.....#.#.#.#...#.#...#.#.#...#...###...#.....#.#.#.#...#.....#.#.###.....#.....#...###.#...#...#
+#.#.###############.#.#########.#.#####.###########.#.#.#.#.#.#.###.#.###.#########.#.###.#.#.#.###.#.###.#.#.#######.#.###.###.###.###.#.#.#
+#.#...###...###...#.#.#.........#.......###...#...#...#...#...#.#...#...#.....#.....#.###...#...###...#...#...#...###...###...#...#...#...#.#
+#.###.###.#.###.#.#.#.#.###################.#.#.#.#############.#.#####.#####.#.#####.#################.#######.#.###########.###.###.#####.#
+#...#.....#.....#...#.#.............###...#.#...#...#...#.......#.....#...#...#.....#...#...###.......#.........#...........#...#...#.......#
+###.#################.#############.###.#.#.#######.#.#.#.###########.###.#.#######.###.#.#.###.#####.#####################.###.###.#########
+###.................#.............#...#.#...#...#...#.#.#...#...#...#.###.#.###...#...#...#...#.....#.#.................#...###...#...#.....#
+###################.#############.###.#.#####.#.#.###.#.###.#.#.#.#.#.###.#.###.#.###.#######.#####.#.#.###############.#.#######.###.#.###.#
+#...#...............#...........#.#...#.#.....#.#.....#...#...#...#...#...#.#...#.#...#.....#.#.....#.#...#...........#...###...#.....#.#...#
+#.#.#.###############.#########.#.#.###.#.#####.#########.#############.###.#.###.#.###.###.#.#.#####.###.#.#########.#######.#.#######.#.###
+#.#.#...#...#.......#.###.......#.#.....#.....#.....#...#.....###.......#...#...#.#...#...#...#.....#...#...#.....#...#.......#.........#...#
+#.#.###.#.#.#.#####.#.###.#######.###########.#####.#.#.#####.###.#######.#####.#.###.###.#########.###.#####.###.#.###.###################.#
+#.#.....#.#.#.#...#...#...#.....#.#.....#...#.#...#...#.......#...#.....#...###.#.###.....###...###...#.....#...#...###.#...............#...#
+#.#######.#.#.#.#.#####.###.###.#.#.###.#.#.#.#.#.#############.###.###.###.###.#.###########.#.#####.#####.###.#######.#.#############.#.###
+#.....#...#...#.#.#...#...#.#...#...###...#.#...#...#...#...###.....###.....#...#.....#...#...#.#...#.....#...#...#...#.#.............#...###
+#####.#.#######.#.#.#.###.#.#.#############.#######.#.#.#.#.#################.#######.#.#.#.###.#.#.#####.###.###.#.#.#.#############.#######
+#...#.#.#.......#...#.#...#.#.............#.........#.#.#.#.....#...#####...#.......#.#.#.#...#...#.......###.#...#.#...#.............#.....#
+#.#.#.#.#.###########.#.###.#############.###########.#.#.#####.#.#.#####.#.#######.#.#.#.###.###############.#.###.#####.#############.###.#
+#.#.#...#...........#.#.....###...........#.........#.#.#.#.....#.#...#...#.#.......#...#.....#...#.........#.#.....#...#.........###...#...#
+#.#.###############.#.#########.###########.#######.#.#.#.#.#####.###.#.###.#.#################.#.#.#######.#.#######.#.#########.###.###.###
+#.#.#.............#.#.#.......#...........#.#######...#...#.....#.#...#...#...#...#.....#.....#.#.#.#...#...#.....#...#.....#...#...#.#...###
+#.#.#.###########.#.#.#.#####.###########.#.###################.#.#.#####.#####.#.#.###.#.###.#.#.#.#.#.#.#######.#.#######.#.#.###.#.#.#####
+#.#.#...........#.#.#.#.....#.#...#######...#################E#...#.#...#.....#.#.#.#...#.#...#.#...#.#.#.......#.#.......#...#...#...#.....#
+#.#.###########.#.#.#.#####.#.#.#.###########################.#####.#.#.#####.#.#.#.#.###.#.###.#####.#.#######.#.#######.#######.#########.#
+#.#.........#...#...#.......#...#..S###############.....#####.#...#...#.#.....#.#...#.#...#.....###...#.....#...#.#...#...#.....#.........#.#
+#.#########.#.#####################################.###.#####.#.#.#####.#.#####.#####.#.###########.#######.#.###.#.#.#.###.###.#########.#.#
+#.........#...#.......#.....#...#...#...#####.......#...#####.#.#.....#.#.......#...#...#.....#...#.......#...###.#.#.#.....#...###...###...#
+#########.#####.#####.#.###.#.#.#.#.#.#.#####.#######.#######.#.#####.#.#########.#.#####.###.#.#.#######.#######.#.#.#######.#####.#.#######
+###...#...#...#.#.....#.#...#.#...#...#.....#.....#...###...#.#.#...#...#.....#...#...###...#...#...#...#...#...#...#.........#.....#.......#
+###.#.#.###.#.#.#.#####.#.###.#############.#####.#.#####.#.#.#.#.#.#####.###.#.#####.#####.#######.#.#.###.#.#.###############.###########.#
+#...#...#...#.#.#...#...#.#...#...........#...#...#.......#.#...#.#.#...#...#.#...#...#...#.......#.#.#.....#.#.#...###.......#.....#.......#
+#.#######.###.#.###.#.###.#.###.#########.###.#.###########.#####.#.#.#.###.#.###.#.###.#.#######.#.#.#######.#.#.#.###.#####.#####.#.#######
+#.........###...###...###...###.........#.....#.#...........#...#.#.#.#.....#.....#...#.#.......#.#.#.........#...#.....#.....#.....#...#...#
+#######################################.#######.#.###########.#.#.#.#.###############.#.#######.#.#.#####################.#####.#######.#.#.#
+#.............###...........###.........###...#.#.......###...#.#.#.#.............#...#.......#...#.#...................#.......#.....#...#.#
+#.###########.###.#########.###.###########.#.#.#######.###.###.#.#.#############.#.#########.#####.#.#################.#########.###.#####.#
+#.......#...#...#.#...#...#.....#...###.....#...#.....#...#.#...#.#.#.....###...#.#.....#...#.....#.#.................#.....#...#...#.......#
+#######.#.#.###.#.#.#.#.#.#######.#.###.#########.###.###.#.#.###.#.#.###.###.#.#.#####.#.#.#####.#.#################.#####.#.#.###.#########
+###...#...#.#...#...#...#.........#.....#.........###...#.#.#.....#.#...#.....#.#.#...#...#.......#.....#...........#...#...#.#...#.........#
+###.#.#####.#.###########################.#############.#.#.#######.###.#######.#.#.#.#################.#.#########.###.#.###.###.#########.#
+#...#.....#.#.#...#.....#...............#.........#...#...#...#.....###.#.....#.#.#.#.........#.......#...#...#...#.....#.....###...........#
+#.#######.#.#.#.#.#.###.#.#############.#########.#.#.#######.#.#######.#.###.#.#.#.#########.#.#####.#####.#.#.#.###########################
+#.#.....#.#.#.#.#.#...#.#.............#.#.........#.#...###...#.......#...###.#.#...#...#.....#.###...#.....#...#.......###.................#
+#.#.###.#.#.#.#.#.###.#.#############.#.#.#########.###.###.#########.#######.#.#####.#.#.#####.###.###.###############.###.###############.#
+#...#...#...#...#.....#.###...#...#...#.#.#.......#...#...#.....#.....###...#.#.#...#.#.#...#...#...#...#...............#...#...#...#...#...#
+#####.#################.###.#.#.#.#.###.#.#.#####.###.###.#####.#.#######.#.#.#.#.#.#.#.###.#.###.###.###.###############.###.#.#.#.#.#.#.###
+#.....#.....#...#.....#.....#...#...###...#.#.....###...#.###...#...#...#.#.#.#.#.#.#.#.###...###...#.###.........#...###.#...#...#.#.#.#...#
+#.#####.###.#.#.#.###.#####################.#.#########.#.###.#####.#.#.#.#.#.#.#.#.#.#.###########.#.###########.#.#.###.#.#######.#.#.###.#
+#...#...###.#.#.#.#...#...................#.#.....#.....#.....#.....#.#...#.#.#.#.#.#.#.....#.....#.#.#.........#.#.#.....#.......#...#...#.#
+###.#.#####.#.#.#.#.###.#################.#.#####.#.###########.#####.#####.#.#.#.#.#.#####.#.###.#.#.#.#######.#.#.#############.#######.#.#
+###...#.....#.#.#.#...#.#.................#.....#.#...........#.#...#...#...#.#.#.#...#.....#...#.#...#.......#...#.#.............#...###.#.#
+#######.#####.#.#.###.#.#.#####################.#.###########.#.#.#.###.#.###.#.#.#####.#######.#.###########.#####.#.#############.#.###.#.#
+#.......#...#.#...#...#.#.#.....#.......#...#...#...#...#.....#.#.#...#.#...#.#.#.....#...#...#.#.#...........#...#.#.........#.....#...#.#.#
+#.#######.#.#.#####.###.#.#.###.#.#####.#.#.#.#####.#.#.#.#####.#.###.#.###.#.#.#####.###.#.#.#.#.#.###########.#.#.#########.#.#######.#.#.#
+#...#...#.#...#.....#...#.#...#.#.#.....#.#.#.....#.#.#.#...#...#.#...#...#.#.#.#...#.#...#.#.#.#.#.............#...#.......#...#...#...#.#.#
+###.#.#.#.#####.#####.###.###.#.#.#.#####.#.#####.#.#.#.###.#.###.#.#####.#.#.#.#.#.#.#.###.#.#.#.###################.#####.#####.#.#.###.#.#
+###...#.#.....#.....#...#...#.#...#.#...#.#...#...#.#.#...#.#.#...#.....#.#...#.#.#...#...#.#.#.#.#...#.....#.......#.....#.#.....#.#.#...#.#
+#######.#####.#####.###.###.#.#####.#.#.#.###.#.###.#.###.#.#.#.#######.#.#####.#.#######.#.#.#.#.#.#.#.###.#.#####.#####.#.#.#####.#.#.###.#
+#.....#.......###...#...#...#.#.....#.#...#...#...#.#.#...#.#.#.....#...#...###.#.....#...#.#.#.#.#.#.#...#.#.....#...#...#.#.#...#...#.#...#
+#.###.###########.###.###.###.#.#####.#####.#####.#.#.#.###.#.#####.#.#####.###.#####.#.###.#.#.#.#.#.###.#.#####.###.#.###.#.#.#.#####.#.###
+#...#.###...#...#.#...###.....#.....#...###.....#.#...#...#.#.#...#.#...#...#...#.....#...#.#...#...#.#...#.#...#.#...#...#.#...#...#...#...#
+###.#.###.#.#.#.#.#.###############.###.#######.#.#######.#.#.#.#.#.###.#.###.###.#######.#.#########.#.###.#.#.#.#.#####.#.#######.#.#####.#
+#...#.....#...#...#...#.........###.#...#.......#...#.....#.#.#.#...#...#...#...#.#...#...#.......###...###.#.#...#.#.....#.....#...#...#...#
+#.###################.#.#######.###.#.###.#########.#.#####.#.#.#####.#####.###.#.#.#.#.#########.#########.#.#####.#.#########.#.#####.#.###
+#...#.....#.......#...#...#...#.....#.#...#...#.....#.#.....#.#...#...#.....#...#.#.#...#...#...#.......#...#.....#.#.#...#...#...#.....#...#
+###.#.###.#.#####.#.#####.#.#.#######.#.###.#.#.#####.#.#####.###.#.###.#####.###.#.#####.#.#.#.#######.#.#######.#.#.#.#.#.#.#####.#######.#
+#...#...#.#.#.....#...###...#.......#.#...#.#.#.....#...#.....#...#...#.....#...#.#.#...#.#.#.#...#...#.#.....#...#.#...#...#.....#.#.......#
+#.#####.#.#.#.#######.#############.#.###.#.#.#####.#####.#####.#####.#####.###.#.#.#.#.#.#.#.###.#.#.#.#####.#.###.#############.#.#.#######
+#...#...#...#...#.....#.......#...#.#.###.#.#.#...#.....#.#...#.#.....#...#.#...#.#.#.#...#.#...#.#.#.#...#...#...#...#.....#.....#...#...###
+###.#.#########.#.#####.#####.#.#.#.#.###.#.#.#.#.#####.#.#.#.#.#.#####.#.#.#.###.#.#.#####.###.#.#.#.###.#.#####.###.#.###.#.#########.#.###
+#...#...#.......#.....#.#...#...#.#.#.#...#.#.#.#.#.....#...#.#.#...#...#.#.#.#...#.#.....#.#...#...#.#...#.#.....#...#...#.#...#...#...#...#
+#.#####.#.###########.#.#.#.#####.#.#.#.###.#.#.#.#.#########.#.###.#.###.#.#.#.###.#####.#.#.#######.#.###.#.#####.#####.#.###.#.#.#.#####.#
+#...#...#.......#.....#...#.....#...#.#...#.#.#.#.#.......#...#...#...###...#.#...#.#.....#.#.......#.#.#...#.....#.....#.#...#...#...#...#.#
+###.#.#########.#.#############.#####.###.#.#.#.#.#######.#.#####.###########.###.#.#.#####.#######.#.#.#.#######.#####.#.###.#########.#.#.#
+#...#.#.........#...#...#.......#...#...#.#.#.#.#.#...#...#...#...#...........#...#.#.#...#.........#...#...#.....#.....#...#.#.......#.#.#.#
+#.###.#.###########.#.#.#.#######.#.###.#.#.#.#.#.#.#.#.#####.#.###.###########.###.#.#.#.#################.#.#####.#######.#.#.#####.#.#.#.#
+#.#...#.......#...#.#.#...#.......#.#...#.#.#.#.#...#.#...#...#...#.....#.....#.###.#...#.................#.#.....#.#...#...#.#.....#...#.#.#
+#.#.#########.#.#.#.#.#####.#######.#.###.#.#.#.#####.###.#.#####.#####.#.###.#.###.#####################.#.#####.#.#.#.#.###.#####.#####.#.#
+#.#.#...###...#.#.#.#...#...#.......#.###.#.#.#.#.....#...#.#...#.#.....#.#...#...#.....#.....#...#.....#.#.#.....#...#...#...#.....#...#.#.#
+#.#.#.#.###.###.#.#.###.#.###.#######.###.#.#.#.#.#####.###.#.#.#.#.#####.#.#####.#####.#.###.#.#.#.###.#.#.#.#############.###.#####.#.#.#.#
+#.#.#.#.....#...#...###...###.....#...#...#.#...#...#...###...#...#.#.....#.#.....#.....#...#.#.#.#.###...#.#.............#...#.......#.#...#
+#.#.#.#######.###################.#.###.###.#######.#.#############.#.#####.#.#####.#######.#.#.#.#.#######.#############.###.#########.#####
+#...#.....#...#...#...#...#.......#...#...#...#.....#...........#...#.#.....#.....#...#...#.#...#.#.....###.#...#...#.....###...........#...#
+#########.#.###.#.#.#.#.#.#.#########.###.###.#.###############.#.###.#.#########.###.#.#.#.#####.#####.###.#.#.#.#.#.###################.#.#
+#...#.....#.###.#...#...#...#...#...#.###.....#...#...#.....#...#.....#...#.......#...#.#.#...###.....#...#...#...#.#.....................#.#
+#.#.#.#####.###.#############.#.#.#.#.###########.#.#.#.###.#.###########.#.#######.###.#.###.#######.###.#########.#######################.#
+#.#.#.....#...#.#...#...#...#.#.#.#.#.........#...#.#.#...#.#.#...#...#...#.......#...#.#...#.......#...#.........#.#.......#...#.....#...#.#
+#.#.#####.###.#.#.#.#.#.#.#.#.#.#.#.#########.#.###.#.###.#.#.#.#.#.#.#.#########.###.#.###.#######.###.#########.#.#.#####.#.#.#.###.#.#.#.#
+#.#.......#...#.#.#.#.#.#.#.#.#.#.#...#...#...#...#.#.#...#.#.#.#...#...#...#...#.#...#...#...#...#...#.#.....#...#.#...#...#.#.#...#.#.#.#.#
+#.#########.###.#.#.#.#.#.#.#.#.#.###.#.#.#.#####.#.#.#.###.#.#.#########.#.#.#.#.#.#####.###.#.#.###.#.#.###.#.###.###.#.###.#.###.#.#.#.#.#
+#...........###...#...#...#...#...###...#...#####...#...###...#...........#...#...#.......###...#.....#...###...###.....#.....#.....#...#...#
+#############################################################################################################################################

data/21.ans

@@ -0,0 +1,2 @@
+202274
+245881705840972

data/21.in

@@ -0,0 +1,5 @@
+319A
+670A
+349A
+964A
+586A

data/22.ans

@@ -0,0 +1,2 @@
+16894083306
+1925

data/23.ans

@@ -0,0 +1,2 @@
+1064
+aq,cc,ea,gc,jo,od,pa,rg,rv,ub,ul,vr,yy

data/24.ans

@@ -0,0 +1,2 @@
+51837135476040
+hjf,kdh,kpp,sgj,vss,z14,z31,z35

data/24.in

@@ -0,0 +1,313 @@
+x00: 1
+x01: 0
+x02: 0
+x03: 1
+x04: 1
+x05: 1
+x06: 0
+x07: 0
+x08: 1
+x09: 1
+x10: 0
+x11: 1
+x12: 0
+x13: 0
+x14: 1
+x15: 1
+x16: 1
+x17: 1
+x18: 0
+x19: 0
+x20: 0
+x21: 0
+x22: 1
+x23: 1
+x24: 1
+x25: 1
+x26: 1
+x27: 1
+x28: 0
+x29: 1
+x30: 1
+x31: 0
+x32: 1
+x33: 0
+x34: 0
+x35: 0
+x36: 0
+x37: 1
+x38: 1
+x39: 0
+x40: 0
+x41: 0
+x42: 0
+x43: 1
+x44: 1
+y00: 1
+y01: 1
+y02: 1
+y03: 1
+y04: 0
+y05: 0
+y06: 0
+y07: 0
+y08: 0
+y09: 1
+y10: 0
+y11: 1
+y12: 0
+y13: 0
+y14: 1
+y15: 0
+y16: 0
+y17: 0
+y18: 0
+y19: 1
+y20: 0
+y21: 0
+y22: 0
+y23: 0
+y24: 0
+y25: 1
+y26: 1
+y27: 0
+y28: 1
+y29: 0
+y30: 1
+y31: 0
+y32: 1
+y33: 1
+y34: 0
+y35: 1
+y36: 1
+y37: 1
+y38: 0
+y39: 1
+y40: 0
+y41: 1
+y42: 1
+y43: 0
+y44: 1
+
+x07 AND y07 -> ncs
+y24 AND x24 -> wrf
+x19 XOR y19 -> tsm
+x40 XOR y40 -> svt
+rjf OR src -> dfv
+fsf XOR fgs -> z44
+mhc AND jqd -> qgn
+nrr XOR sms -> kpp
+y20 AND x20 -> ngc
+y21 AND x21 -> hbc
+sgj OR ptb -> rqf
+hbc OR wdr -> gjn
+tks XOR sbg -> z23
+ddh AND tnm -> hgg
+hsf OR bjw -> vbb
+x15 XOR y15 -> vqs
+x10 AND y10 -> dtm
+vqs XOR vss -> z15
+x29 XOR y29 -> mgd
+srg OR cwb -> qtn
+nmb OR mbk -> z45
+dhs OR njq -> tng
+jfw OR jrf -> vpd
+x07 XOR y07 -> gck
+tdw XOR vrk -> z03
+y11 AND x11 -> ffw
+x16 XOR y16 -> bth
+x39 XOR y39 -> tnm
+cfg AND ngh -> jrq
+vpd AND mvn -> hbj
+rgp XOR bth -> z16
+qtn AND cjd -> vrv
+x14 AND y14 -> cgt
+dwh XOR hsk -> z24
+tgp XOR dkh -> z13
+y26 XOR x26 -> cfg
+cpc XOR nbm -> z42
+y42 XOR x42 -> cpc
+x17 XOR y17 -> cjd
+rqf XOR pqn -> z36
+x27 AND y27 -> nwg
+bcq AND hnk -> vjp
+tks AND sbg -> wqr
+wvr OR skq -> gmw
+cwm AND tpv -> pqw
+x41 AND y41 -> tqh
+jcw AND wpk -> sbr
+tgp AND dkh -> tbh
+wrg XOR nwq -> z38
+y32 XOR x32 -> gds
+bmn OR hbj -> msb
+wps XOR mtn -> z33
+ncs OR pjf -> sws
+wqr OR tqk -> dwh
+x31 AND y31 -> pwg
+y12 XOR x12 -> jcw
+nrr AND sms -> z31
+x38 AND y38 -> npd
+y02 AND x02 -> fwt
+y37 AND x37 -> rnc
+fwt OR vtm -> tdw
+x38 XOR y38 -> nwq
+gds AND ghr -> ckd
+ffw OR nfb -> wpk
+ctv XOR wht -> z05
+y11 XOR x11 -> cmg
+y05 XOR x05 -> ctv
+jhw XOR tcv -> z18
+wrf OR gnt -> rmw
+y01 AND x01 -> tnr
+x36 XOR y36 -> pqn
+gjq OR dfg -> skp
+x40 AND y40 -> ptg
+y39 AND x39 -> dqn
+bjb OR hjf -> sbg
+rrn OR rpt -> qfs
+ctv AND wht -> dhs
+sgs AND rsb -> ccw
+rmw XOR psg -> z25
+y24 XOR x24 -> hsk
+bgd XOR msb -> z10
+y17 AND x17 -> fvv
+y22 AND x22 -> kdh
+qfs AND rfv -> fgp
+wds AND fps -> rhr
+y18 XOR x18 -> tcv
+ttd AND nhg -> tfw
+bbc AND jkb -> ptb
+djn OR tnr -> cpb
+y35 XOR x35 -> bbc
+tfw OR cgt -> z14
+rgp AND bth -> srg
+dwh AND hsk -> gnt
+pqw OR ngc -> frt
+y25 XOR x25 -> psg
+y13 XOR x13 -> tgp
+x30 XOR y30 -> rbw
+vrv OR fvv -> jhw
+skp XOR mgd -> z29
+cmg XOR ntv -> z11
+vjr XOR vbb -> z04
+gkj XOR sws -> z08
+x20 XOR y20 -> tpv
+ntv AND cmg -> nfb
+x32 AND y32 -> tdk
+wmr AND cpb -> vtm
+x19 AND y19 -> jps
+jhw AND tcv -> rqv
+y27 XOR x27 -> bcq
+x34 AND y34 -> hdk
+wqc XOR qtf -> z01
+wgk OR sbr -> dkh
+x43 AND y43 -> kdb
+y04 XOR x04 -> vjr
+rmw AND psg -> fgg
+gkj AND sws -> jfw
+cwm XOR tpv -> z20
+cjd XOR qtn -> z17
+fsf AND fgs -> nmb
+wps AND mtn -> rpt
+x33 XOR y33 -> mtn
+bcq XOR hnk -> z27
+tbh OR wwk -> nhg
+twb XOR tsm -> z19
+frt AND mhw -> wdr
+y15 AND x15 -> pwr
+rbw XOR dfv -> z30
+vss AND vqs -> ctt
+x28 AND y28 -> gjq
+y28 XOR x28 -> dvf
+bbc XOR jkb -> sgj
+x43 XOR y43 -> fps
+y04 AND x04 -> khw
+pwg OR kpp -> ghr
+x31 XOR y31 -> nrr
+gmw XOR gck -> z07
+frt XOR mhw -> z21
+spb AND tng -> skq
+svt AND hkg -> knf
+gjn AND kdh -> bjb
+qfs XOR rfv -> z34
+cpc AND nbm -> jtt
+tqh OR ccw -> nbm
+jtt OR qkv -> wds
+gds XOR ghr -> z32
+rbw AND dfv -> qnv
+msb AND bgd -> gjr
+qnv OR bjd -> sms
+y18 AND x18 -> pns
+x41 XOR y41 -> rsb
+x26 AND y26 -> srh
+nvc OR npd -> ddh
+dtm OR gjr -> ntv
+x08 AND y08 -> jrf
+y14 XOR x14 -> ttd
+y06 AND x06 -> wvr
+y16 AND x16 -> cwb
+rnc OR qgn -> wrg
+y30 AND x30 -> bjd
+jqd XOR mhc -> z37
+ddh XOR tnm -> z39
+x12 AND y12 -> wgk
+cqh OR fgg -> ngh
+kdh XOR gjn -> z22
+x01 XOR y01 -> wqc
+khw OR djm -> wht
+ctt OR pwr -> rgp
+y21 XOR x21 -> mhw
+vjp OR nwg -> dhh
+x02 XOR y02 -> wmr
+gck AND gmw -> pjf
+rqv OR pns -> twb
+y00 AND x00 -> qtf
+y05 AND x05 -> njq
+y29 AND x29 -> rjf
+vrk AND tdw -> hsf
+y42 AND x42 -> qkv
+y10 XOR x10 -> bgd
+cfg XOR ngh -> z26
+tng XOR spb -> z06
+y00 XOR x00 -> z00
+cpb XOR wmr -> z02
+ckd OR tdk -> wps
+jrq OR srh -> hnk
+y22 XOR x22 -> hjf
+x03 AND y03 -> bjw
+nhg XOR ttd -> vss
+tsm AND twb -> rwg
+dqn OR hgg -> hkg
+y34 XOR x34 -> rfv
+y35 AND x35 -> z35
+x25 AND y25 -> cqh
+y33 AND x33 -> rrn
+wqc AND qtf -> djn
+sgs XOR rsb -> z41
+x08 XOR y08 -> gkj
+rwg OR jps -> cwm
+rqf AND pqn -> wbv
+x37 XOR y37 -> mhc
+dvf XOR dhh -> z28
+kdb OR rhr -> fgs
+knf OR ptg -> sgs
+svt XOR hkg -> z40
+y13 AND x13 -> wwk
+y23 AND x23 -> tqk
+fgp OR hdk -> jkb
+jcw XOR wpk -> z12
+y06 XOR x06 -> spb
+x23 XOR y23 -> tks
+y09 AND x09 -> bmn
+wds XOR fps -> z43
+dhh AND dvf -> dfg
+mgd AND skp -> src
+wrg AND nwq -> nvc
+y03 XOR x03 -> vrk
+y36 AND x36 -> kqk
+vjr AND vbb -> djm
+x44 XOR y44 -> fsf
+x44 AND y44 -> mbk
+kqk OR wbv -> jqd
+vpd XOR mvn -> z09
+y09 XOR x09 -> mvn

data/25.ans

@@ -0,0 +1 @@
+3395