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北京大学《ACM-ICPC竞赛训练》暑期课面向全球招生。容量有限,报名从速!

这道题,偶用解析几何过的,求两条直线垂直平分线的交点,即为圆心,然后求半径.看了大家的帖子,学习!!!!!!

Posted by Ontheline at 2009-02-18 12:18:43 on Problem 2242


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