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感谢disscuss,,,,,敲了一个多小时,,终于过了,,编码太差了啊,,, 啊啊啊啊啊啊,,,,

Posted by yy17yy at 2011-05-08 09:05:22 on Problem 2518
不过这个题让我知道了,,,bfs还可以记录每个节点的最短路径数,,,,,

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