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一个set里任意两个人都是朋友,并且不存在某个人是这个set里所有人的朋友

Posted by wywcgs at 2006-09-21 13:52:28 on Problem 2989
In Reply To:这题是的意思是在一个set里没有三个人互为朋友吗?? Posted by:xiangsanzi at 2006-09-21 13:47:28


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