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How to think about the following problem
https://codeforces.net/contest/234/problem/G
This problem is the type of problem where I know everything needed but I still can't solve it. I always learn a lot from such problems
I am not interested in a solution, I know it, but how to approach the problem and reach a solution. How to think about it? What should have hinted me to consider using what was needed to solve it ?
