06. Pets

using System;

namespace Pets
{
    class Program
    {
        static void Main()
        {
            int day = int.Parse(Console.ReadLine());
            double foodKg = double.Parse(Console.ReadLine());
            double dogKg = double.Parse(Console.ReadLine());
            double catKg = double.Parse(Console.ReadLine());
            double turtleGr = double.Parse(Console.ReadLine());

            double totalKg = dogKg * day + catKg * day + turtleGr / 1000 * day;
            if (foodKg >= totalKg)
            {
                Console.WriteLine($"{Math.Floor(foodKg - totalKg)} kilos of food left.");
            }
            else
            {
                Console.WriteLine($"{Math.Ceiling(totalKg - foodKg)} more kilos of food are needed.");
            }
        }
    }
}