2018年4月18日
贪心：zoj3953 Intervals
摘要： Description Chiaki has n intervals and the i-th of them is [li, ri]. She wants to delete some intervals so that there does not exist three intervals a 阅读全文
posted @ 2018-04-18 10:16 爱国呐 阅读(260) 评论(0) 推荐(0) 编辑