2018年7月29日
HDU-1394 Minimum Inversion Number
摘要： Problem Description The inversion number of a given number sequence a1, a2, …, an is the number of pairs (ai, aj) that satisfy i < j and ai > aj. For 阅读全文
posted @ 2018-07-29 10:58 Nlifea 阅读(119) 评论(0) 推荐(0)