diff --git a/1523. Count Odd Numbers in an Interval Range1 b/1523. Count Odd Numbers in an Interval Range1
new file mode 100644
index 0000000..cf932ea
--- /dev/null
+++ b/1523. Count Odd Numbers in an Interval Range1	
@@ -0,0 +1,6 @@
+class Solution {
+public:
+    int countOdds(int low, int high) {
+        return (high+(high&1)-low+(low&1))>>1;
+    }
+};