diff --git a/Count Complete Tree Nodes.cpp b/Count Complete Tree Nodes.cpp
new file mode 100644
index 0000000..a053797
--- /dev/null
+++ b/Count Complete Tree Nodes.cpp	
@@ -0,0 +1,27 @@
+class Solution {
+public:
+    int findleftheight(TreeNode* root){
+        int h=0;
+        while(root!=NULL){
+            h++;
+            root=root->left;
+        }
+        return h;
+    }
+    int findrightheight(TreeNode* root){
+        int h1=0;
+        while(root!=NULL){
+            h1++;
+            root=root->right;
+        }
+        return h1;
+    }
+    int countNodes(TreeNode* root) {
+        if(root==NULL)return 0;
+        int lh=findleftheight(root);
+        int rh=findrightheight(root);
+        if(lh==rh)return (1 << lh)-1;
+        return 1+countNodes(root->left) + countNodes(root->right);
+        
+    }
+};