Improving execution speed on 001.cpp #1
Description
@Adhavan999 https://github.com/CodeVITap/ProjectEuler/blob/master/cpp/001.cpp runs at O(n) time. Using the summation formula for integers can make it run faster [O(1) time].
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@Adhavan999 https://github.com/CodeVITap/ProjectEuler/blob/master/cpp/001.cpp runs at O(n) time. Using the summation formula for integers can make it run faster [O(1) time].