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把你的想法反过来考虑 对于删除每个新边考虑 再删除哪些旧边是可以的 需要用到求LCA

Posted by ogogo at 2007-10-07 20:48:29 on Problem 3417
In Reply To:呵呵,别人都是怎么做的? Posted by:wangfangbob at 2007-10-07 20:44:12


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