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对称串
Time Limit:1000MS  Memory Limit:32768K

Description:

有一些字串,有些对称,有些不对称,请将对称的串按长度排列。

Sample Input:

123321
123454321
123
321
sdfsdfd
121212
\\dd\\

Sample Output:

123321
\\dd\\
123454321
Status  Submit


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