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DFS是不对的，因为DFS的话找到的一条路径每个点只能走一次，而可能找到最短路径的末个点会走多次，比如这组数据

Posted by xiaolonghingis at 2006-08-11 14:22:22 on Problem 2946
In Reply To:恩 我明白你的意思 我就是觉得不应该是WA..... Posted by:sasnzy at 2006-08-11 09:41:52 
5 5 3
.2..E
...2.
4....
...24
22222
0 0 0
答案是14。
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