摘要: AC Challenge 30.04% 1000ms 128536K Dlsj is competing in a contest with n (0 < n \le 20)n(0<n≤20) problems. And he knows the answer of all of these pro 阅读全文
posted @ 2018-09-01 18:32 yzm10 阅读(796) 评论(0) 推荐(0) 编辑