17 lines
317 B
Python
17 lines
317 B
Python
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positions = input()
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followings = []
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for idx,i in enumerate(positions):
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following = 0
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for j in range(idx,len(positions)):
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if positions[j] == i:
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following += 1
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else:
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break
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followings.append(following)
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if max(followings) >= 7:
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print("YES")
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else:
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print("NO")
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