using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("cena уиски" );

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

        Console.WriteLine("kolichestvo бира" );

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

        Console.WriteLine(" kolichestvo вино" );

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

        Console.WriteLine("kolichestvo rakia" );

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

        Console.WriteLine("kolichestvo whiskey");

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

        var cenarak=u/2;

        var cenavino=cenarak-0.4*cenarak;

        var cenabira=cenarak-0.8*cenarak;

        var sumar=cenarak*a;

        var sumav=cenavino*g;

        var sumab=cenabira*j;

        var vsuma=sumar+sumav+sumab;

        Console.WriteLine("Obshta suma:"+vsuma);

            //yoana yotsova 

    }

}