28 lines
854 B
Python
28 lines
854 B
Python
from os.path import join, dirname
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def checkRow(row: str, alternative=False) -> bool:
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rule, password = map(lambda s: s.strip(), row.split(':'))
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amount, char = rule.split(' ')
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minimum, maximum = map(int, amount.split('-'))
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if alternative:
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return (password[minimum - 1] == char) ^ (password[maximum - 1] == char)
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else:
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occurrences = password.count(char)
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return minimum <= occurrences <= maximum
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data = join(dirname(__file__), '../data.txt')
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with open(data) as f:
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valid = 0
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valid_alt = 0
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rows = list(f.read().strip().split('\n'))
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for row in rows:
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if(checkRow(row)):
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valid += 1
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if(checkRow(row, alternative=True)):
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valid_alt += 1
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print(f'Found {valid} valid passwords.')
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print('Policy changed...')
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print(f'Found {valid_alt} valid passwords.')
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