i don't know what is wrong with my idea. I tried many times but still wrong answer. can anyone tell me what is wrong?
source : http://www.spoj.com/problems/GSS2/
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I can't see how you handled the idea of removing duplicates. I solved it using a offline approach. Quora has a nice tutorial on it.
It is harder than GSS3, GSS4 and GSS5. Maybe you want to try them first if you are going to solve them all.
i also use offline. i sort the queries wrt right position. if any value appear previously I set 0 at the previous position of the segment tree, and insert the value at the current position. then i use GSS1.
Explain this:
tn.ms = max({0LL, l.ms, r.ms, l.rs+r.ls});