03 2023 档案

[AtCoder] B - Counting Grids
摘要：The key observation is that there is always at most 1 cell that violates both conditions. Proof: if x violates both conditions, that means all other n 阅读全文
posted @ 2023-03-21 23:37 Review->Improve 阅读(40) 评论(0) 推荐(0)