Cannot figure out the reason of TLE...

Правка en1, от always_4ever_5_25__21_SS, 2018-04-09 18:56:50

37125846

I am trying to solve Sereja and Brackets . I can see that n is up to 10^6. And I have seen others solutions and they are pretty much as same as mine. I cannot figure out why I am getting TLE for my submission. Cannot find anything wrong with my segment tree or if I have missed something. :(

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en2 Английский always_4ever_5_25__21_SS 2018-04-09 18:57:39 73
en1 Английский always_4ever_5_25__21_SS 2018-04-09 18:56:50 402 Initial revision (published)