Square String?

1619A800· newbie1s256 MB⌨ stdin/stdout

Sample 1of 1

Input

10
a
aa
aaa
aaaa
abab
abcabc
abacaba
xxyy
xyyx
xyxy

Output

NO
YES
NO
YES
YES
YES
NO
NO
NO
YES

1619A.cpp

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Ln 11·137 BGNU C++20 (64)