hdu 1394 Minimum Inversion Number 线段树
摘要：
Problem DescriptionThe inversion number of a given number sequence a1, a2, ..., an is the number of pairs (ai, aj) that satisfy i aj.For a given sequ... 阅读全文
posted @ 2015-10-17 16:36 无谓的味道 阅读(167) 评论(0) 推荐(0) 编辑