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这倒是对的,只是要做个变换是吧。。有点意思嘿。。我再想想

Posted by ACM06060 at 2007-10-20 22:45:37 on Problem 3415
In Reply To:不过肯定可以在1~n内 Posted by:frkstyc at 2007-10-20 22:43:24


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