Description
Note the following:
- The objective is to get the Accepted verdict on the online judge.
- It does not matter how many unsuccessful submissions you make, or when you get your Accepted verdict, as long as it is before the deadline.
- Once you get Accepted on the online judge, your solution will stay Accepted forever and you can move onto other problems – you will get full score for this problem. In the unlikely event that we discover issues with our tests and need to rejudge some solutions, we will make an email announcement.
- If you do not get the Accepted verdict, you will not get any points for this problem.
- You may use any programming language supported by CodeForces.
- We will not grade your code (its elegance, what algorithm you used, …).


