When measuring performance, it is best to use huge numbers (N = randi(1701034) may return a small number, and it would be best that you use something like 1e7 + randi(1e5)). If N is small (and currently it can be), the trivial sum may perform better depending on which operations are running at the server in a given moment.
Project Euler: Problem 1, Multiples of 3 and 5
Back to basics 11 - Max Integer
Getting the absolute index from a matrix
07 - Common functions and indexing 5
A shooting competition
Area of polygon
Non trivial identities - differentiation
Simple polynomial evaluation
Remove collinear points in a set of 2D points defining a polygon
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