2020年1月6日
Hello 2020 题解
摘要： "New Year and Naming" "New Year and Ascent Sequence" "New Year and Permutation" "New Year and Conference" New Year and Naming $$ Time Limit: 1 s\quad 阅读全文
posted @ 2020-01-06 22:29 Jiaaaaaaaqi 阅读(180) 评论(0) 推荐(0) 编辑