2016年8月15日
HDU 4812 D Tree 树分治+逆元处理
摘要： D Tree Problem Description There is a skyscraping tree standing on the playground of Nanjing University of Science and Technology. On each branch of t 阅读全文
posted @ 2016-08-15 12:44 meekyan 阅读(603) 评论(0) 推荐(1)