Sub or Swp problem Solution | Starters 120 | Explanation + C++ Code

Contest Link: https://www.codechef.com/START118 Problem Link: https://www.codechef.com/problems/GCDPERM Time Codes: 0:00 - Intro 0:10 - Problem Statement 0:29 - Approach 2:05 - Code(C++) 2:10- Outro