Guys my code is continuously getting TLE on Test case 6. Can someone pls help find the bug? link to my code : https://codeforces.net/contest/1354/submission/80872965
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I think this is due to the fact that maybe the time complexity of your code is nlog^2q. Question requires it to be nlogq.
Try using fast i/o. I have also used similar approach and just using fast i/o might do it.
I tried same approach with segment trees and it failed :(
Yes, fenwick tree/BIT is faster than segment tree due to segment tree operations having larger constant factor. This question does have n,q = 1e6, and even BIT passes with around ~ 1s.