using System;

using System.Globalization;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Insert the code of the product, the quantity and the price, respectively: ");

        string[] product1 = Console.ReadLine().Split(' ');

        int code1 = int.Parse(product1[0]);

        int quantity1 = int.Parse(product1[1]);

        double price1 = double.Parse(product1[2]);

        string[] product2 = Console.ReadLine().Split(' ');

        int code2 = int.Parse(product2[0]);

        int quantity2 = int.Parse(product2[1]);

        double price2 = double.Parse(product2[2]);

        double total = (quantity1 * price1) + (quantity2 * price2);

        Console.WriteLine();

        Console.WriteLine("Total a pagar = $ " + total.ToString("F2", CultureInfo.InvariantCulture));

    }

}