摘要: CodeForces 578F Mirror Box https://codeforces.com/contest/578/problem/F Tutorial https://codeforces.com/blog/entry/20368 观察发现,假如我们令坐标之和为奇数的点为红点,坐标之和为偶 阅读全文
posted @ 2020-06-10 17:59 LJZ_C 阅读(170) 评论(0) 推荐(0) 编辑