Help Needed: ICL2015 Problem

Правка en1, от Simple_Genius, 2016-01-24 08:40:37

I was trying to solve this problem from ICL2015div2 finals. I understand this is a problem on combinatorics (and perhaps DP) but I could not find a way towards solution.

Problem Link

I am weak in DP problems. They seem overwhelming to me most of the times. An elaborate explanations will surely be helpful for me. :)

Thanks in advance.

Теги dp, combination, icl, 2015questions

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en1 Английский Simple_Genius 2016-01-24 08:40:37 418 Initial revision (published)