GSS1 spoj, getting wa on the 9th tc

i am not able to find my error,can anyone help me find it in my code.
link :my code

This question has been asked more than thousand time,“WA in gss1”,“TLE in gss1”,why dont u search before asking!!U can just compare the codes with the correct code!!

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did that as well, but still not able to figure out my mistake

recheck your merging(formula) for bestleftsum,bestrightsum.