Doubt in problem B-Present

Revision en1, by _Erased, 2020-04-25 08:35:29

The tutorial of the problem 1322B - Подарок says "Bonus:Solve the problem in O(NlogC)." Can someone please explain how to do it?

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en1 English _Erased 2020-04-25 08:35:29 154 Initial revision (published)