10 lines
196 B
Python
10 lines
196 B
Python
t = int(input())
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for _ in range(t):
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s = input()
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if len(s) % 2 != 0:
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print("NO")
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elif s[0:len(s)//2] == s[len(s)//2:len(s)]:
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print("YES")
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else:
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print("NO")
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