2021年1月26日
2021.1.23--vj补题
摘要： B - B CodeForces - 879B n people are standing in a line to play table tennis. At first, the first two players in the line play a game. Then the loser 阅读全文
posted @ 2021-01-26 19:55 西瓜0 阅读(72) 评论(0) 推荐(0)