摘要: CF1677 D Tokitsukaze and Permutations 传送门:https://codeforc.es/contest/1677/problem/D 官方题解:https://codeforc.es/contest/1677/attachments/download/16092/ 阅读全文
posted @ 2022-05-18 22:03 夜空之星 阅读(55) 评论(1) 推荐(0) 编辑