pets

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace silvanadoc
{
    class silvanadoc
    {
        static void Main(string[] args)
        {
            int daysOut = int.Parse(Console.ReadLine());
            int foodKept = int.Parse(Console.ReadLine());
            double dogFood = double.Parse(Console.ReadLine());
            double catFood = double.Parse(Console.ReadLine());
            double turtleFood = double.Parse(Console.ReadLine());

            var dogSum = daysOut * dogFood;
            var catSum = catFood * daysOut;
            var turtleSum = (turtleFood / 1000) * daysOut;

            var allFood = dogSum + catSum + turtleSum;

            var foodLeft = foodKept - allFood;
            var foodMore = allFood - foodKept;

            if (foodKept >= allFood)
            {
                Console.WriteLine($"{Math.Floor(foodLeft)} kilos of food left.");
            }
            else
            {
                Console.WriteLine($"{Math.Ceiling(foodMore)} more kilos of food are needed.");
            }







        }
    }
}