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AFK, but the method I want to try is just a series of additions; n^2 - (n-1)^2 == n + n-1, so just do that in a for-loop from 1 to n.
n^2 - (n-1)^2 == n + n-1
AFK, but the method I want to try is just a series of additions;
n^2 - (n-1)^2 == n + n-1, so just do that in a for-loop from 1 to n.