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

namespace Pets
{
    class Program
    {
        static void Main(string[] args)
        {
            var NumberOfDays=int.Parse(Console.ReadLine());
            var LeftFoodKg= int.Parse(Console.ReadLine());
            var DogFoodKg = double.Parse(Console.ReadLine());
            var CatFoodKg = double.Parse(Console.ReadLine());
            var TurtleFoodGr = double.Parse(Console.ReadLine());
            TurtleFoodGr = TurtleFoodGr * 0.001;



            var countFood = DogFoodKg* NumberOfDays + CatFoodKg* NumberOfDays + TurtleFoodGr* NumberOfDays;

            if (countFood < LeftFoodKg)
            {

                Console.WriteLine("{0} kilos of food left.",Math.Floor(LeftFoodKg - countFood));
            }
            else
            {

                Console.WriteLine("{0} more kilos of food are needed.",Math.Ceiling (countFood-LeftFoodKg));
            }

        }
    }
}