CandidFlakes's blog

Just need hint for Problem C
By CandidFlakes, history, 4 months ago, In English

This is the problem. This is my WA attempt.

What I have observed is that a maximum of (n/2-1) maxima is possible for an array of size n, where n is even. So initially I created another array q such that the final array a = p+q , has all elements equal. Then I greedily tried to create (n/2-1) maximas by swapping the elements of array q( In the code it's ans array). I am willing to explain more if clarification is needed. Please just give me the hint, I want to solve it myself.

I will be thankful for any help!

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4 months ago, # |
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Auto comment: topic has been updated by CandidFlakes (previous revision, new revision, compare).

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4 months ago, # |
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look at the tests

and I think you can look at the hints in the editorial

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4 months ago, # |
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Quick hint/intuition: Indices of all local maximas in an optimal arrangement should have the same parity.

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