20 lines
415 B
Python
20 lines
415 B
Python
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"""
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Solution to 2020/01
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"""
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COUNT = 0
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with open('input', 'r') as file:
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for line in file.readlines():
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rule, char, password = line.strip().split()
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char = char[0]
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pos_1, pos_2 = rule.split('-')
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pos_1 = int(pos_1) - 1
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pos_2 = int(pos_2) - 1
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is_valid = (password[pos_1] == char) ^ (password[pos_2] == char)
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if is_valid:
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COUNT += 1
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print(COUNT)
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