Update README.md

Author: suhas142

README.md

@@ -74,8 +74,9 @@ Please add the link to the README as well. The folder structure `Arrays/Left Rot
 ||[Diagonal Difference](https://www.hackerrank.com/challenges/diagonal-difference/problem)|Easy|[View](Algorithms/Diagonal%20Difference/solution.cpp)|[View](/Algorithms/Diagonal%20Difference/solution.java)|[View](/Algorithms/Diagonal%20Difference/solution.py)|
 ||[Minimum Absolute Difference in an Array]( https://www.hackerrank.com/challenges/minimum-absolute-difference-in-an-array/problem)|Medium|||[View](Algorithms/Greedy/Minimum%20Absolute%20Difference%20in%20an%20Array/solution.py)|
 | Contest Problems |
-||[Squares of a Sorted Array](https://www.hackerrank.com/contests/coding-gym-mo0419/challenges/squares-of-a-sorted-array)|Medium|[View](/Contest%20Problems/Squares%20of%20a%20Sorted%20Array/solution.cpp)||[View](/Contest%20Problems/Squares%20of%20a%20Sorted%20Array/solution.py)| 
-
+||[Squares of a Sorted Array](https://www.hackerrank.com/contests/coding-gym-mo0419/challenges/squares-of-a-sorted-array)|Medium|[View](/Contest%20Problems/Squares%20of%20a%20Sorted%20Array/solution.cpp)||[View](/Contest%20Problems/Squares%20of%20a%20Sorted%20Array/solution.py)| 
+| Disjoint Sets |
+||[Merging Communities](https://www.hackerrank.com/challenges/merging-communities/problem)|Easy|||[View](/Disjoint%20Sets/Merging%20Communities/solution.py)|
 
 ### A cool & collective resource🔻
 https://drive.google.com/file/d/1FMdN_OCfOI0iAeDlqswCiC2DZzD4nPsb/view?usp=sharing