Hi,
If you're a beginner and would like to learn the concept of DSU, do take part in CodeMonk DSU! :D
Date: 15 July Time: 2100 HRS (IST)
Yes, there are HackerEarth merchandise to be won. So, come on and code on!
Here's the link: https://www.hackerearth.com/code-monk-disjoint-set-union/
Good luck!