20 lines
534 B
Julia
20 lines
534 B
Julia
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txt = strip(read("input/5", String))
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rules, updates = map(x -> map(x -> map(x -> parse(Int, x), split(x, Regex("[,|]"))), split(x, "\n")), split(txt, "\n\n"))
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partOne, partTwo = 0, 0
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isOrdered(update) = all(p -> all(after -> [p[2],after] in values(rules), update[p[1]+1:end]), enumerate(update))
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middle(v) = v[length(v)÷2+1]
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for update in updates
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if isOrdered(update)
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global partOne += middle(update)
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else
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sort!(update, lt = (a, b) -> isOrdered([a, b]))
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global partTwo += middle(update)
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end
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end
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@show partOne, partTwo
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