using System;

public class Program

{

    public static void Main()

    {

    int first;

        int second;

        int third;

        int fourth;

        Console.WriteLine("Please input first integer.");

        string First = Console.ReadLine();

        first = Convert.ToInt32(First);

        Console.WriteLine("Please input second integer.");

        string Second = Console.ReadLine();

        second = Convert.ToInt32(Second);Console.WriteLine("Please input Third integer.");

        string Third = Console.ReadLine();

        third = Convert.ToInt32(Third);Console.WriteLine("Please input Fourth integer.");

        string Fourth = Console.ReadLine();

        fourth = Convert.ToInt32(Fourth);

        int product = first*second*third*fourth;

        Console.WriteLine("Your product is: " + product);

    }

}