Consider the following problem:

Given an initial array of n integers and q queries of the form:

I x V : Add V to the x-th position on the vector. If it is not empty (equals 0) then add it between the positions x and x + 1.

S x y : Calculate the sum of all elements from index x to y, inclusively.

My teacher has advised us to use RMQ or an Offline Segment Tree for this one, but i would like to know if there´s a way of adapting the Fenwick Tree to support this sort of shift that may need to be done on the vector efficiently.