diff --git a/11 November Leetcode Challenge 2021/3_sumRootLeaf.cpp b/11 November Leetcode Challenge 2021/3_sumRootLeaf.cpp
new file mode 100644
index 0000000..7325e82
--- /dev/null
+++ b/11 November Leetcode Challenge 2021/3_sumRootLeaf.cpp	
@@ -0,0 +1,8 @@
+class Solution {
+public:
+    int sumNumbers(TreeNode* root, int num=0) {
+        return root->left == root->right ? num * 10 + root->val :
+            ((root->left ? sumNumbers(root->left, num * 10 + root->val) : 0) + 
+            (root->right ? sumNumbers(root->right, num * 10 + root->val) : 0));
+    }
+};