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是这样的

Posted by Alcyone at 2003-08-16 22:00:24 on Problem 1277
In Reply To:有点郁闷 Posted by:multistar at 2003-08-15 14:35:37 
> 这道题目是不是说：
> 
> N个顶点有构成一个环，最多有多少个交点？
> 
> 如果不是，请指教哦。
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