2019年8月10日
CF1198E Rectangle Painting 2
摘要： 题目 There is a square grid of size $n×n$. Some cells are colored in black, all others are colored in white. In one operation you can select some rectan 阅读全文
posted @ 2019-08-10 16:18 zeroy0410 阅读(270) 评论(5) 推荐(0) 编辑