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要求详细

Posted by cuiaoxiang at 2007-10-07 12:48:43 on Problem 3417
In Reply To:啥lca-rmq, 根本就是后序遍历+树型dp,O(n)复杂度,怪不得我的线段树超时! Posted by:wangfangbob at 2007-10-07 12:46:42


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