public static class main
{
    public static void Main()
    {
        int B = Convert.ToInt32(Console.ReadLine());
        Function.Factorial(B);
    }
}
public static class Function
{
    public static void Factorial(int B)
    if(B >= 1 && B <= 9)
    {
        int factorial = 1;
        for(int i = 1; i <= B; i++)
        {
            factorial = factorial * i;
        }
        Console.WriteLine("B!=" + factorial);
    }
    else
    {
        Console.WriteLine("Умова!");
    }
}