Brute force day 2 that will never finish
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@ -38,14 +38,14 @@ template time*(i: string, body: untyped): untyped =
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when not defined(release):
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echo "NOTE: This is not a real measurement of performance. Compile in release mode with -d:release for best performance."
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proc doDay*[T](
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proc doDay*[T, X](
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day: int,
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inputLoader: int -> T,
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part1: T -> int,
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part2: T -> int,
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part1: T -> X,
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part2: T -> X,
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testInput: T,
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expectedPart1: int,
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expectedPart2: int): void =
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expectedPart1: X,
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expectedPart2: X): void =
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when not defined(release):
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var p1 = testInput.part1()
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@ -61,6 +61,15 @@ proc doDay*[T](
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time(&"Day {day} Part 2"): echo day.inputLoader().part2()
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proc doDayX*[T, X](
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day: int,
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inputLoader: int -> T,
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part1: T -> X,
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part2: T -> X,
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testTuple: (T, X, X)): void =
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let (tin, expectedPart1, expectedPart2) = testTuple
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doDay(day, inputLoader, part1, part2, tin, expectedPart1, expectedPart2)
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proc doDay*[T](
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day: int,
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inputLoader: int -> T,
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@ -15,15 +15,23 @@ proc stepPolymer(polymer: string, combis: Table[(char, char), char]): string =
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result.add polymer[i]
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i += 1
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proc p1(input: Lines): int =
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proc p1(input: Lines): uint64 =
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var (polymer, combis) = input.parse
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for i in 1..10:
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polymer = polymer.stepPolymer combis
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var pps = polymer.toCountTable.values.toSeq
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max(pps) - min(pps)
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uint64(max(pps) - min(pps))
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proc p2(input: Lines): int =
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return 0
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proc p2(input: Lines): uint64 =
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var (polymer, combis) = input.parse
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for i in 1..40:
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echo &"Step {i}"
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polymer = polymer.stepPolymer combis
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var t = initTable[char, uint64]()
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for c in polymer:
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inc t[c]
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var pps = t.values.toSeq
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max(pps) - min(pps)
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const input = """
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NNCB
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@ -45,4 +53,4 @@ BC -> B
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CC -> N
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CN -> C
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""".strip().split('\n').mapIt(it.strip)
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doDay 14, n => n.loadInput, p1, p2, (input, 1588, 0)
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doDayX 14, n => n.loadInput, p1, p2, (input, 1588'u64, 2188189693529'u64)
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