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用叉积就可以了

Posted by xiaomi at 2004-11-18 17:56:49 on Problem 2066
In Reply To:判断形内不麻烦吧,在跟其他边不相交的基础上,判断中点是否在形内就够了 Posted by:lympanda at 2004-11-18 17:15:35
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