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31 lines
707 B
31 lines
707 B
def main():
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with open("day2.txt", "rt") as f:
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lines = [line.rstrip() for line in f.readlines()]
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n2 = 0
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n3 = 0
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for line in lines:
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occurences = [line.count(letter) for letter in line]
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if 2 in occurences:
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n2 += 1
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if 3 in occurences:
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n3 += 1
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print(n2 * n3)
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for line in lines:
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for other in lines:
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diffs = 0
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common = ""
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for c1, c2 in zip(line, other):
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if c1 == c2:
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common += c1
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else:
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diffs += 1
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if diffs == 1:
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print(common)
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return
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if __name__ == "__main__":
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main()
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