using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Napishi chislo");

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

        int sum=1;

        for(int i=1; i<=a; i++)

        {

            sum=sum*i;

            Console.Write("{0}*" ,i);

        }

         Console.Write("="+sum);

    }

}