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数据有问题,有可能存在无解的情况,所以二分+高精度会wa,要向下取整,所以double写得都可以过,在二分的时候要特殊处理,即使无解也要保存那个偏小的值

Posted by yuanchuanshun at 2012-09-14 17:29:31 on Problem 2109


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