2016年8月8日
Codeforces Round B. Buttons
摘要： Manao is trying to open a rather challenging lock. The lock has n buttons on it and to open it, you should press the buttons in a certain order to ope 阅读全文
posted @ 2016-08-08 22:16 俺叫王梦涵 阅读(158) 评论(0) 推荐(0) 编辑