diff --git a/challengers-list.md b/challengers-list.md
index 848dec155..e46b9656a 100644
--- a/challengers-list.md
+++ b/challengers-list.md
@@ -1,3 +1,5 @@
 # List of challengers
 1. [Shivay](https://github.com/shivaylamba)
-2. [shivscaler](http://github.com/shivscaler)
+2. [Shubh Rai](https://github.com/shubhrai2811)
+3. [shivscaler](http://github.com/shivscaler)
+
diff --git a/contributors/shubhrai2811/shubhrai2811-2.md b/contributors/shubhrai2811/shubhrai2811-2.md
new file mode 100644
index 000000000..721139527
--- /dev/null
+++ b/contributors/shubhrai2811/shubhrai2811-2.md
@@ -0,0 +1,2 @@
+added newly tto check rebase
+Shubh Rai
diff --git a/contributors/shubhrai2811/shubhrai2811.md b/contributors/shubhrai2811/shubhrai2811.md
new file mode 100644
index 000000000..0fcc6ece0
--- /dev/null
+++ b/contributors/shubhrai2811/shubhrai2811.md
@@ -0,0 +1,8 @@
+---
+name: Shubh Rai
+github_user_name: shubhrai2811
+url_of_github_issue: https://github.com/scaleracademy/scaler-open-source-september-challenge/issues/45#issue-1876837890
+your_favorite_programming_language: C++
+your_hosted_github_pages_link: https://shubhrai2811.github.io/
+your_hosted_github_pages_repository_link: https://github.com/shubhrai2811/shubhrai2811.github.io.git
+---
diff --git a/gist-solution.md b/gist-solution.md
new file mode 100644
index 000000000..1468e5feb
--- /dev/null
+++ b/gist-solution.md
@@ -0,0 +1,4 @@
+gist 1 link - https://gist.github.com/shubhrai2811/24b4b51a74322d87328a74d0c8a69050
+
+
+gist 2 link -https://gist.github.com/shubhrai2811/bb1e93157a9018ca407fa2d71fb70674