From 6b0b5cd885d166f53ace166f9029a79af360527f Mon Sep 17 00:00:00 2001
From: THANGA MANICKAM M <thanga.manickam5@gmail.com>
Date: Sat, 13 Oct 2018 22:39:34 +0530
Subject: [PATCH] Update sum-of-all-numbers-gettaplay.py

I have used the property of sum of arithmetic progression here.