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是所有圆面积和的一半?还是每个圆都要覆盖一半以上?

Posted by majar at 2009-10-18 09:57:03
In Reply To:E题题目大意 Posted by:ecust_linpeng at 2009-10-18 09:46:18 
> 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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