diff --git a/jiyunpar/math/11050.cpp b/jiyunpar/math/11050.cpp
new file mode 100644
index 0000000..6d90e46
--- /dev/null
+++ b/jiyunpar/math/11050.cpp
@@ -0,0 +1,21 @@
+#include <iostream>
+#include <vector>
+
+using namespace std;
+
+int main(void)
+{
+	ios::sync_with_stdio(0);
+	cin.tie(0);
+	int n, k;
+	cin >> n >> k;
+	int ret = 1;
+	for (int i = 1; i <= n; ++i)
+		ret *= i;
+	for (int i = 1; i <= k; ++i)
+		ret /= i;
+	for (int i = 1; i <= (n - k); ++i)
+		ret /= i;
+	cout << ret;
+	return (0);
+}
\ No newline at end of file