2018年7月24日
CodeForces 519E A and B and Lecture Rooms(倍增)
摘要： A and B are preparing themselves for programming contests. The University where A and B study is a set of rooms connected by corridors. Overall, the U 阅读全文
posted @ 2018-07-24 22:55 Styx-ferryman 阅读(309) 评论(0) 推荐(0) 编辑