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O(n^2)的预处理在线,怎么会TLE呢?呵呵,用Tarjan过了。但是尝试着把黑书上的那个递推思想 -- 预处理写了一下。TLE,不解,n才900而已?怎么会超时呢…… 知道的留下言,thanks。 Followed by:
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