2018年12月30日
（Codeforce）The number of positions
摘要： Petr stands in line of n people, but he doesn't know exactly which position he occupies. He can say that there are no less than a people standing in f 阅读全文
posted @ 2018-12-30 15:29 贾铭梓 阅读(270) 评论(0) 推荐(0) 编辑