2018年2月5日
（POJ 2151）Check the difficulty of problems（概率DP+容斥）
摘要： Description Organizing a programming contest is not an easy job. To avoid making the problems too difficult, the organizer usually expect the contest 阅读全文
posted @ 2018-02-05 22:48 海哥天下第一 阅读(136) 评论(0) 推荐(0) 编辑