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HDU 5775 Bubble Sort（逆序对）
逆序对原创 2016-07-28 20:19:05 · 489 阅读 · 0 评论 -
HDU 5828 Rikka with Sequence（线段树+小优化）
Problem Description As we know, Rikka is poor at math. Yuta is worrying about this situation, so he gives Rikka some math tasks to practice. There is one of them:Yuta has an array A with n numbers. Th原创 2016-08-11 19:48:18 · 894 阅读 · 2 评论