15 lines
249 B
Python
15 lines
249 B
Python
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def main():
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nb = input()
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team = "0"
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count = 0
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for i in nb:
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if i != team:
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team = i
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count = 0
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count += 1
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if count >= 7:
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print("YES")
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return
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print("NO")
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main()
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