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

namespace _2._9_Padawan_Equipment
{
    class Program
    {
        static void Main(string[] args)
        {
            double amountMoney = double.Parse(Console.ReadLine());
            int countStudents = int.Parse(Console.ReadLine());
            double priceLightsabers = double.Parse(Console.ReadLine());
            double priceRobes = double.Parse(Console.ReadLine());
            double priceBelts = double.Parse(Console.ReadLine());

            double totalpriceLightsabers = priceLightsabers * Math.Ceiling(countStudents * 1.1);
            double totalPraiceRobes = priceRobes * countStudents;

            double totalPriceBelts = (priceBelts * countStudents) - (countStudents / 6 * priceBelts);
            double totalPrice = totalpriceLightsabers + totalPriceBelts + totalPraiceRobes;

            if (amountMoney >= totalPrice)
            {
                Console.WriteLine($"The money is enough - it would cost {totalPrice:F2}lv.");
            }
            else
            {
                Console.WriteLine($"Ivan Cho will need {totalPrice - amountMoney:F2}lv more.");
            }
        }
    }
}