the link of the problem:↵
https://codeforces.me/gym/103102/problem/A↵
↵
I guess I have known the general idea of this problem, but I don't know how to solve it practically。↵
↵
↵
I have read the tutorial, but I can't really understand it.↵
↵
↵
So I hope someone will share your thoughts on this problem.↵
↵
https://codeforces.me/gym/103102/problem/A↵
↵
I guess I have known the general idea of this problem, but I don't know how to solve it practically。↵
↵
↵
I have read the tutorial, but I can't really understand it.↵
↵
↵
So I hope someone will share your thoughts on this problem.↵
↵