I can't find an approach to merge the subtree's optimally. If anyone could solve this problem, could you share your idea on this ?

Thanks in advance :)

the ranklist I have got so far : https://www.codechef.com/public/rankings/ACM17AMR

The contest is still running .. this ranklist doesn't show any time , submission time , elapsed time etc and who is submitting what . Is there anyone who can provide a live ranklist of the contest ?

Thanks in advance .

problem link : http://codeforces.me/gym/101341/problem/K

My solution : http://paste.ubuntu.com/25525923/

I've used recursive interval DP technique . But don't know why my solution is not working .

Thanks in advance :)

Edit : My bad .. Found the mistake . Never mind. :)