2017年8月22日
Educational Codeforces Round 27 A B C
摘要： A. Chess Tourney Berland annual chess tournament is coming! Organizers have gathered 2·n chess players who should be divided into two teams with n peo 阅读全文
posted @ 2017-08-22 11:18 Draymonder 阅读(225) 评论(0) 推荐(0) 编辑