摘要: 比赛网址:https://codeforces.com/contest/1391 A. Suborrays 网址:https://codeforces.com/contest/1391/problem/A A permutation of length \(n\) is an array consi 阅读全文
posted @ 2020-09-05 15:15 大秦帝国 阅读(300) 评论(0) 推荐(0)