using System;
public class Program
{
public static void Main()
// Factorial problem
//n! means n × (n - 1) × ... × 3 × 2 × 1
//For example, 10! = 10 × 9 × ... × 3 × 2 × 1 = 3628800
//Write a function that performs this calculation.
//PerformRecursiveFactorial();
Console.WriteLine("Hello World");
}