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Re:我觉得这个题目有点歧义

Posted by zhanyu at 2011-07-25 13:44:53 on Problem 1228
In Reply To:我觉得这个题目有点歧义 Posted by:smallbox at 2009-04-16 21:04:56
先找ymin,多个再找xmin的一个点。
然后其他点按该点的极角排序,然后距离远的排在后面?
但是这样得到的点的顺序不是凸包的顺序。最后一条边会存在问题。

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