44 lines
985 B
Python
44 lines
985 B
Python
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from output import answer # , matrix, D, DD, ADJ, ints, mhd, mdbg, vdbg
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n = 16
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title = "Dragon Checksum"
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@answer(1, "The checksum to the state to fill first disc is {}")
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def part_1(presolved):
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return presolved[0]
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@answer(2, "The checksum to the state to fill second disc is {}")
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def part_2(presolved):
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return presolved[1]
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def solve(data):
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p12 = []
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for DS in [272, 35651584]:
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s = [int(c) for c in data]
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while len(s) < DS:
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b = [abs(int(c) - 1) for c in s[::-1]]
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s = s + [0] + b
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s = s[:DS]
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p = len(s)
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while p % 2 == 0:
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s = [int(a == b) for a, b in zip(s[::2], s[1::2])]
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p = len(s)
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p12.append("".join(map(str, s)))
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return p12
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if __name__ == "__main__":
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with open("./input/16.txt", "r") as f:
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inp = f.read().strip()
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inp = solve(inp)
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a = part_1(inp)
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b = part_2(inp)
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assert a == "10011010010010010"
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assert b == "10101011110100011"
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