15 lines
261 B
Plaintext
15 lines
261 B
Plaintext
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#!/usr/bin/env python
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from collections import deque
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with open('input') as f:
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offset = 0
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buf = deque([], 14)
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while True:
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buf.append(f.read(1))
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offset += 1
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if len(set(buf)) == 14:
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print(offset)
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break
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