09. Padawan Equipment

using System;

namespace PadawanEquipment
{
    class Program
    {
        static void Main(string[] args)
        {
            double money = double.Parse(Console.ReadLine());
            int count = int.Parse(Console.ReadLine());
            double saber = double.Parse(Console.ReadLine());
            double robe = double.Parse(Console.ReadLine());
            double belt = double.Parse(Console.ReadLine());
            double sum = 0;

            if (count < 6)
            {
                sum = (Math.Ceiling(count * 1.1) * saber) + count * robe + count * belt;
            }
            else
            {
                sum = (Math.Ceiling(count * 1.1) * saber) + count * robe + (count - count / 6) * belt;
            }

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