14 lines
378 B
Python
14 lines
378 B
Python
import sys
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from collections import deque
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dq = deque()
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for (i,c) in enumerate(sys.stdin.read()):
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equals = list(filter(lambda x: c == x[1], enumerate(dq)))
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if len(equals)>0: # remove left part until a char equal to c, included
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for _ in range(equals[-1][0]+1):
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dq.popleft()
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if len(dq) == 13: # if we have 13+1 distinct chars, we're good
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print(i+1)
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break
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dq.append(c)
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