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求助

Posted by cjw at 2007-02-10 21:38:18 on Problem 1436
当判断了线段两两可见后,请问这道题有没有判断三条线段两两可见的有效办法啊?我是直接用邻接表和邻接矩阵来判断的,空间几乎用了64k.

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