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- file = open('22.txt')
- s = file.readline()
- l = 0
- k = 0
- ans = 10**10
- for r in range(len(s)):
- if s[r] == '.':
- k += 1
- while k >= 7:
- if s[l] == '.':
- k -= 1
- l += 1
- ans = min(ans, r - l + 1)
- print(ans)
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