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E题题目大意

Posted by ecust_linpeng at 2009-10-18 09:46:18
In Reply To:宁波的现场boaring Posted by:ecust_linpeng at 2009-10-18 08:49:55 
给出n个圆（n<=20）。
求一个最小半径，圆心在上述圆的一个圆心，面积能够覆盖所有圆至少一半以上的面积
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