Problem: https://www.codechef.com/problems/HLD/
I was only able to come up with the simple O(n^2) DP. I went through the editorial but didn't fully understand it.
Can someone share their ideas/approaches.
Any help would be appreciated.
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Auto comment: topic has been updated by C21 (previous revision, new revision, compare).
Auto comment: topic has been updated by C21 (previous revision, new revision, compare).
EDIT: Nevermind, I'm dumb.
Can you explain it in a bit more detail. Why log N times and how it's useful.
Nevermind, you're right. I'll get back to you if I'm able to think about the answer.
I think you have misread the problem. We have to mark the edges heavy/light to get the minimum cost.
Any updates