using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

​

namespace ConsoleApp3

{

    class Program

    {

        static void Main(string[] args)

        {

            var days = int.Parse(Console.ReadLine());

            var sladkari = int.Parse(Console.ReadLine());

            var torti = int.Parse(Console.ReadLine());

            var gofreti = int.Parse(Console.ReadLine());

            var palachinki = int.Parse(Console.ReadLine());

​

            var cenatorta =torti* 45;

            var cenagofreta =gofreti* 5.8;

            var cenapalachinka =palachinki* 3.2;

​

            var totaladay=(cenatorta+cenagofreta+cenapalachinka)*sladkari;

            var totalcampaign = totaladay * days;

​

            Console.WriteLine("{0:f2}",totalcampaign-((totalcampaign)/8));

​

        }

    }

}

​