> It takes O(n*n) time to add the n integers.
Eh?
Eh?
> We will be dealing with arbitrary precision integers (bignums) in the problem, so let us also make a few assumptions:
> Addition or subtraction of an m-bit integer and an n-bit integer (m <= n) takes O(n) time.
> Counting the number of 1-bits in an n-bit integer takes O(n) time.