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这题怎么节省时间,我按照经典的叉积方法实现,却用了500多ms,请问15ms的是怎么搞的?

Posted by liyineng at 2006-07-30 12:14:45 on Problem 1654
这题怎么节省时间,我按照经典的叉积方法实现,却用了500多ms,请问15ms的是怎么搞的?

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