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大概是他如果能从A走到B的话,存在一条从B到终点的路,它的距离小于A到终点的最短距离

Posted by zerocool_08 at 2005-10-15 22:26:40 on Problem 2662
In Reply To:告急:这句话怎么理解? Posted by:274827185 at 2005-10-15 15:02:43


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