10 lines
210 B
Python
10 lines
210 B
Python
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#/usr/bin/env python
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with open("input.txt", "r") as f:
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signal = f.readline()
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for i in range(0, len(signal)-13):
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marker = signal[i:i+14]
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if len(set(marker)) == 14:
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print(i+14)
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break
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