Deer of Santa

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

namespace _2.Deer_of_Santa
{
    class Program
    {
        static void Main(string[] args)
        {
            //Programming Basics Exam - 16 December 2017

            int days = int.Parse(Console.ReadLine());
            int kgFood = int.Parse(Console.ReadLine());
            double foodFirstDeer = double.Parse(Console.ReadLine());
            double foodSecondDeer = double.Parse(Console.ReadLine());
            double foodThirdDeer = double.Parse(Console.ReadLine());

            double foodEatenFirst = days * foodFirstDeer;
            double foodEatenSecond = days * foodSecondDeer;
            double foodeatenThird = days * foodThirdDeer;

            double totalEatenFood = foodEatenFirst + foodEatenSecond + foodeatenThird;

            if (totalEatenFood <= kgFood)
            {
                Console.WriteLine("{0} kilos of food left.", Math.Floor(kgFood - totalEatenFood));
            }

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