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Re:cosA吧?A是二面角

Posted by frkstyc at 2005-04-29 12:45:41 on Problem 2409
In Reply To:Re:cosA吧?A是二面角 Posted by:uni at 2005-04-29 12:42:30
有图的sample里面的背面是不是要分割的?

> 在A=0的时候要稍微考虑一下
> 
> 我觉得我的算法应该没问题,但是就是WA啊WA

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