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Re:囧，看到这题第一反应树链剖分，然后发现只要树状数组维护dfs序列就行了……In Reply To:囧，看到这题第一反应树链剖分，然后发现只要树状数组维护dfs序列就行了…… Posted by:xuhaoran510 at 2011-03-01 22:59:52 Followed by: Post your reply here: |
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