readme update

Author: Pankajcoder1

README.md

@@ -24,4 +24,10 @@ Contain file of my [Competitive Programming](https://en.wikipedia.org/wiki/Compe
 ## Name convention of file
 > Name of any file is combination of question name,quesion id, contest id..  depend on platform.
 ---
-I love to write code in [C++](https://medium.com/sololearn/reasons-to-love-c-11c7c2f23d88).
+I love to write code in [C++](https://medium.com/sololearn/reasons-to-love-c-11c7c2f23d88).
+
+## Some Famous Problemset
+- [CSES](https://cses.fi/problemset/)
+- [Timus](https://acm.timus.ru/problemset.aspx)
+- [Leetcode](https://leetcode.com/problemset/all/)
+- [Spoj](https://www.spoj.com/problems/classical/)

Some_Recommended_Question_For_Interview/readme.md

@@ -1,4 +1,4 @@
-### Some inportant Question List
+### Some important Question List
 > Question are from various site and these questions are based on some basics concept which may asked during interview.
 ---
 * [Count Total Set Bit Up To N](https://practice.geeksforgeeks.org/problems/count-total-set-bits-1587115620/1)