这个题感觉黄绿都差不多
by Iniaugoty @ 2023-11-19 12:31:10
@[Libingyue2011](/user/886055) %%%太牛了
by Kdlyh @ 2023-12-02 15:00:29
前缀和加组合数递推，两个黄题难度的玩意儿放一块儿，绿得合理（
by mayisang @ 2023-12-23 20:38:04
@[kkksc03](/user/1) 您看看
by bcbgszyzh @ 2024-01-05 14:27:57
@[bcbgszyzh](/user/726902) 你找题目管理志愿者才对吧，找kkk人家是开发组
by sapo1o @ 2024-02-25 15:20:27
确实水
by xiaoliebao1115 @ 2024-03-31 09:56:31