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理解错了,我还以为是在任意一个点都可以分组哪!

Posted by Sempr at 2006-09-27 12:06:05 on Problem 3026
In Reply To:不用 Posted by:mixter at 2006-09-27 11:55:41
PS:如果在路径上的任意一点都可以分成两组,那又该怎么做呢?

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