'commit'

TangDou/XiTi/1049.cpp

@@ -0,0 +1,13 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+int main() {
+    int n, sum = 1;
+    cin >> n;
+    for (int i = 1; i <= n; i++) {
+        sum *= i;
+    }
+    cout << sum << endl;
+    return 0;
+}