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我去试试看,不过题意里面说的i操作是改变还是相加?

Posted by mmd at 2007-11-18 13:22:24
In Reply To:你怎么变的。我认为二维线段树可解,我就是这么解的,不过tle Posted by:wywcgs at 2007-11-18 13:13:21


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