I tried to solve a today's 2014H - Robin Hood Archery, using the Mo's algorithm, but got a time limit on test 2.
My submission: 282366063. I expect it to work for O(n * sqrt(n) + k * log(k)), so I can't understand where I am mistaken
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I might be wrong but you are creating a basic_string for all testcases for length 1000011 are you sure the initialisation isnt O(size) ? because if it is then you are taking O(t * size) time and that will give you tle