using System;

public class Program

{

    public static void Main()

    {

        int x, y, z, p; 

        Console.WriteLine("Enter no1:");

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

        Console.WriteLine("Enter no2:");

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

        Console.WriteLine("Enter no3:"); 

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

        Console.WriteLine("Enter no4:");

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

        int q = x*y*z*p;

        Console.WriteLine("Product is: ");

        Console.WriteLine(q); 

        Console.ReadLine();

    }

}