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>_<!! 看不懂...

Posted by qiqilrq at 2007-10-26 21:38:04 on Problem 1354
In Reply To:一条长链分成两段, 其实就是一种以1开始的排列,一种以2开始的排列,然后所有情况都包含其中, 把一个以1开始的链在2断开就是两条 Posted by:sunmoonstar at 2006-11-09 16:09:28


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