using System;

public class Program

{

    public static void Main(string[]args) 

    {

        int sum=1;

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

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

        {

            sum=sum*i;

            if(i==n)

            {

            Console.Write(i+"="+sum);   

            }

            else

            {

        Console.Write(i+"*");

            }

        }

    }

}

​

​

​