Codeforces Round 762 (Div. 3) |
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Finished |
A string is called square if it is some string written twice in a row. For example, the strings "aa", "abcabc", "abab" and "baabaa" are square. But the strings "aaa", "abaaab" and "abcdabc" are not square.
For a given string $$$s$$$ determine if it is square.
The first line of input data contains an integer $$$t$$$ ($$$1 \le t \le 100$$$) —the number of test cases.
This is followed by $$$t$$$ lines, each containing a description of one test case. The given strings consist only of lowercase Latin letters and have lengths between $$$1$$$ and $$$100$$$ inclusive.
For each test case, output on a separate line:
You can output YES and NO in any case (for example, strings yEs, yes, Yes and YES will be recognized as a positive response).
10 a aa aaa aaaa abab abcabc abacaba xxyy xyyx xyxy
NO YES NO YES YES YES NO NO NO YES
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