开O2能ac，不开0 pts 不懂了
by Sakuya_maid @ 2023-11-15 08:08:20
@[Sakuya_maid](/user/817442) getC里要特判 n<m 的情况吧
by Shirley_ninefish @ 2023-11-15 09:06:42
@[Shirley_ninefish](/user/796071) 啊，是的，谢谢您了，已经能ac了
by Sakuya_maid @ 2023-11-15 14:03:04