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Re:请解释一下第二个数据

Posted by windy7926778 at 2009-04-05 13:26:04 on Problem 3726
In Reply To:请解释一下第二个数据 Posted by:lshguang89 at 2009-04-05 13:14:32
ABBA
BABA
ABAB
BAAB

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