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后来人注意了 wa了而不知道自己怎么wa的看看这道题测试数据很水,但是很阴险 首先不判环 例如我 1 2 2 3 3 1 5 6 0 0 就过不了,但是AC了 另外0 0要输出 它是一颗树 0 0 Case 1 is a tree. Followed by: Post your reply here: |
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