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Re:什么都不放,怎么可以算一种?!那你算N==2时怎么不算上什么都不放的那种情况啊?

Posted by tq at 2005-07-29 08:38:20 on Problem 2506
In Reply To:什么都不放,当然也算一种嘛。。。 Posted by:wth at 2005-07-28 23:39:25


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