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题目是凸包，我的程序没有求凸包也过了In Reply To:终于过了，写点注意事项吧 Posted by:zdg102 at 2009-09-03 15:38:06 题目没有说凸包是顺序给出的，所以要先进行排序。 排序怎么排？很简单，平均点作为凸包的内点，求每个点到内点的向量的角度，按角度排序即可。 Followed by:
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