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未名BBS上有。http://acm_icpc.bdwm.net/cgi-bin/bbsanc?path=/groups/GROUP_4/ACM_ICPC/D612A252F/D5192E735/X6E3F78E5&attach=0

Posted by 00130004 at 2004-05-14 11:17:46 on Problem 1067
In Reply To:这题的公式怎么推出来的? Posted by:C0400348198 at 2004-03-01 17:38:44
> 哪里有讲解?我只会一个个写……

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