couldn't understand this problem even editortial

Правка en1, от sabbirh654, 2020-02-06 15:42:05

https://mirror.codeforces.com/contest/309/problem/B i couldn't understand the editorial of this problem.i searched on google but couldn't get it at all. someone please explain the solution in a easy way with example?

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en1 Английский sabbirh654 2020-02-06 15:42:05 261 Initial revision (published)