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11 lines
191 B
Python
11 lines
191 B
Python
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s = "7" * 512
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c = 0
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while "7777" in s or "1111" in s:
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c += 1
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if "7777" in s:
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s = s.replace("7777", "1", 1)
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else:
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s = s.replace("1111", "7", 1)
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print(c)
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