65 lines
1.3 KiB
MySQL
65 lines
1.3 KiB
MySQL
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with recursive
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raw (line) as (
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select * from read_csv('data/05.in', header = false)
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),
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ranges (low, high) as (
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select
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cast(spl[1] as int64),
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cast(spl[2] as int64)
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from (
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select split(line, '-') as spl
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from raw
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where contains(line, '-')
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)
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),
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ingredients (id) as (
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select cast(line as int64)
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from raw
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where line <> '' and not contains(line, '-')
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),
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part1 (solution) as (
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select count(*) from ingredients
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where exists (
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select
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low,
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high
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from ranges
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where id between low and high
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)
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),
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merged (low, high) as (
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select * from ranges
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union
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select
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r1.low,
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case when r1.high < r2.high then r2.high else r1.high end
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from merged r1, merged r2
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where
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(r1.low < r2.low or (r1.low = r2.low and r1.high < r2.high))
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and not r1.high < r2.low and not r2.high < r1.low
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),
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part2 (solution) as (
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select sum(m1.high - m1.low + 1) from merged m1
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where not exists (
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select *
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from merged m2
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where
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(m1.high <> m2.high or m1.low <> m2.low)
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and m1.high <= m2.high
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and m1.low >= m2.low
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)
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)
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select
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part1.solution,
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part2.solution
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from part1, part2
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