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tle+wa了N次,终于A了,给出如下建议。

Posted by l3160732 at 2008-06-30 16:53:48 on Problem 2831
1 求出最小生成树后的DFS莫用邻接矩阵
2 提交前要先编译
3 一定要去点调试信息!!!T—T

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