using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _09.Padawan_Equipment
{
    class Program
    {
        static void Main(string[] args)
        {
            double moneyStart = double.Parse(Console.ReadLine());
            int student = int.Parse(Console.ReadLine());
            double lightsaberPerOne = double.Parse(Console.ReadLine());
            double roberPerOne = double.Parse(Console.ReadLine());
            double beltsPerOne = double.Parse(Console.ReadLine());

            int numberOfSabers = (int)Math.Ceiling(student * 1.10);
            int numberOfRobes = student;
            int numberOfBelts = student - (student / 6);

            double moneyNeeded = (lightsaberPerOne * numberOfSabers) + (roberPerOne * numberOfRobes) + (beltsPerOne * numberOfBelts);

            double left = moneyStart - moneyNeeded;

            if (left >= 0)
            {
                Console.WriteLine($"The money is enough - it would cost {moneyNeeded:f2}lv.");
            }
            else
            {
                Console.WriteLine($"Ivan Cho will need {Math.Abs(left):f2}lv more.");
            }



        }
    }
}