diff --git a/3370. Smallest Number With All Set Bits b/3370. Smallest Number With All Set Bits
new file mode 100644
index 0000000..417fc3b
--- /dev/null
+++ b/3370. Smallest Number With All Set Bits	
@@ -0,0 +1,10 @@
+class Solution {
+public:
+    int smallestNumber(int n) {
+        int x = 1; 
+        while (x < n) {
+            x = (x << 1) + 1; 
+        }
+        return x;
+    }
+};