using System;

public class Program

{

    public static void Main()

    {

        var pari = double.Parse(Console.ReadLine());

        var shirochina = double.Parse(Console.ReadLine());

        var duljina = double.Parse(Console.ReadLine());

        var strana = double.Parse(Console.ReadLine());

        var wisochina = double.Parse(Console.ReadLine());

        var cena = double.Parse(Console.ReadLine());

        var suma = double.Parse(Console.ReadLine());

​

        var pod = shirochina*duljina;

        var plosht = (strana*wisochina)/2;

        var plochki = (pod/plosht)+5;

        var obshtasuma = (plochki*cena)+100;

        Console.WriteLine(obshtasuma);

        if (obshtasuma<=500)

        {

            var rezult=500-obshtasuma;

            Console.WriteLine("Ostavashti pari{1}lv left", rezult); 

}

        else 

        {

​

        Console.WriteLine("You'll need lv more");

        }

    }

}