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Re:样例第二个为什么是2?

Posted by sglhsay at 2012-07-09 16:14:26 on Problem 1226
In Reply To:样例第二个为什么是2? Posted by:shadowac at 2011-08-04 12:05:02
看题“such that either X, or its inverse can be found as a substring“ 

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