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下一个ac的就是你啦，呵呵

Posted by frkstyc at 2005-07-01 00:08:20 on Problem 2401
In Reply To:发现，如果一条线段的两端点能和另一折线上的顶点直接相连，那么这条边上的所有点都回mutual visible,然后相同方法检查下一条边；否则，得出答案 NO Posted by:sunmoonstar_love at 2005-06-30 23:59:48 



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