Problem Statement

You may download the problem set from the following link.

You may find problem description.

https://icpc2021.ntub.edu.tw/wp-content/uploads/2021/12/main-1.pdf

https://icpc2021.ntub.edu.tw/wp-content/uploads/2021/12/main-with-hint.pdf

https://codeforces.com/gym/103443