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Dijkstra＋拓扑～～～～

Posted by winsweet at 2008-04-25 00:19:38 on Problem 2662
In Reply To:救命！！！这题是不是要求有多少条最短路径！！！！ Posted by:GRAPHGRAPH at 2007-04-03 22:20:36 
题目规则：
从A能走到B的前提是，B到终点的距离小于A到终点的最小距离。。
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