diff --git a/cs/count-number-of-maximum-bitwise-or-subsets.cs b/cs/count-number-of-maximum-bitwise-or-subsets.cs
new file mode 100644
index 0000000..079b894
--- /dev/null
+++ b/cs/count-number-of-maximum-bitwise-or-subsets.cs
@@ -0,0 +1,16 @@
+public class Solution {
+    public int CountMaxOrSubsets(int[] nums) {
+        var dp = new int[1 << 17];
+        dp[0] = 1;
+
+        var max = 0;
+        foreach (var num in nums) {
+            for (int i = max; i >= 0; --i) {
+                dp[i | num] += dp[i];
+            }
+            max |= num;
+        }
+
+        return dp[max];
+    }
+}