using System;

public class Program

{

    static int Factorial(int n)

    {

        if (n==1) return 1;

        else 

            return n*Factorial(n-1);

    }

    static int Stepen(int x, int n)

    {

        if (n==0) return 1;

        else 

            return x * Stepen(x, n-1);

    }

    public static void Main()

    {

        int n = int.Parse(Console.ReadLine());

        Console.WriteLine(Factorial(n));

                int x = int.Parse(Console.ReadLine());

                Console.WriteLine((x));

​

​

    }

}