2020-C04

从 Trac 迁移的文章

这是从旧校内 Wiki 迁移的文章，可能存在一些样式问题，您可以向 memset0 反馈。

原文章内容如下：

= Official Site =
https://codeforces.com/gym/102331
= Onsite Ranking =
https://codeforces.com/gym/102331
= Test Data & Participants' Solution =
Solution: See attachment for the official solution.
= Upsolving =
https://codeforces.com/group/XsGk7q3EgP/contest/297927/
= Ranklist =
[[Image(2020-C04.png,800px)]]

Official Site

https://codeforces.com/gym/102331

Onsite Ranking

https://codeforces.com/gym/102331

Test Data & Participants' Solution

Solution: See attachment for the official solution.

Upsolving

https://codeforces.com/group/XsGk7q3EgP/contest/297927/

Ranklist

附加文件