using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Enter the first number:");

        int var1 = Convert.ToInt32(Console.ReadLine());

        Console.WriteLine("Enter the second number:");

        int var2 = Convert.ToInt32(Console.ReadLine());

        Console.WriteLine("Enter the third number:");

        int var3 = Convert.ToInt32(Console.ReadLine());

        Console.WriteLine("Enter the fourth number:");

        int var4 = Convert.ToInt32(Console.ReadLine());

        int final = var1*var2*var3*var4

        Console.WriteLine(int)

    }

}