Need help for this problem

Правка en1, от shuro_korsi, 2020-05-18 17:52:41

https://codeforces.me/contest/1307/problem/C

I can't understand, how to solve this. Plz, anyone suggest me how to solve this. Thanks in advance

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en1 Английский shuro_korsi 2020-05-18 17:52:41 175 Initial revision (published)