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Re:原来存在凹的多边形啊

Posted by huangkun at 2007-05-26 19:55:31 on Problem 1385
In Reply To:原来存在凹的多边形啊 Posted by:alpc04 at 2006-10-27 00:17:54
我按照这个思路来依然是wa


> 直接取任一点把多边形分为n-2个三角形 分别求重心
> x=∑si*xi/∑si
> y=∑si*yi/∑si
> si为每块三角形的面积

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