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FT……这题有两个问题,害我RE*3,问题如下:1.of the next 1 - N lines contains a pair of integers that represent an edge ==========================================================================> of the next 1 - N-1 lines contains a pair of integers that represent an edge 2.the number of nodes in a tree, 2<=N<=10,000. ==========================================================================> N>10,000!!!!! Followed by:
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