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58 lines
1.2 KiB
58 lines
1.2 KiB
3 years ago
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from itertools import product
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def readStartPositions(fileName):
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with open(fileName) as file:
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return tuple(int(line[len(line) - 1]) for line in file.read().splitlines())
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def part1(p1: int, p2: int):
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P = {True: p1, False: p2}
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S = {True: 0, False: 0}
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p = True
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totalDiceCount = 0
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while True:
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diceAmount = 0
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for _ in range(3):
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diceAmount += (totalDiceCount % 100) + 1
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totalDiceCount += 1
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P[p] += diceAmount
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P[p] = ((P[p] - 1) % 10) + 1
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S[p] += P[p]
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if S[p] >= 1000:
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break
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p = not p
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print(totalDiceCount * S[not p])
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cache = {}
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def part2(p1, p2, s1=0, s2=0, p=True):
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if (p1, p2, s1, s2, p) in cache:
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return cache[(p1, p2, s1, s2, p)]
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winCount = {True: 0, False: 0}
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for r1, r2, r3 in product([1, 2, 3], repeat=3):
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P = {True: p1, False: p2}
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S = {True: s1, False: s2}
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P[p] += r1 + r2 + r3
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P[p] = ((P[p] - 1) % 10) + 1
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S[p] += P[p]
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if S[p] >= 21:
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winCount[p] += 1
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else:
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subWinCount = part2(*P.values(), *S.values(), not p)
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winCount[True] += subWinCount[True]
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winCount[False] += subWinCount[False]
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cache[(p1, p2, s1, s2, p)] = winCount
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return winCount
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startPos = readStartPositions("input")
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part1(*startPos)
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print(max(part2(*startPos).values()))
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