Baking Masterclass TF MidExam 27Oct18

using System;

namespace _01BakingMasterclass
{
    class Program
    {
        static void Main(string[] args)
        {
            double budget = double.Parse(Console.ReadLine());
            int students = int.Parse(Console.ReadLine());
            double priceFlourPkg = double.Parse(Console.ReadLine());
            double pricePerEgg = double.Parse(Console.ReadLine());
            double pricePerApron = double.Parse(Console.ReadLine());

            double priceEggsPerStudent = 10 * pricePerEgg;

            int flourPkgs = students;
            int freeFlourPkgs = 0;

            for (int i = 1; i <= flourPkgs; i++)
            {
                if (i % 5 == 0)
                {
                    freeFlourPkgs++;
                }
            }
            int totalFlourPkgs = flourPkgs - freeFlourPkgs;
            double aprons = Math.Ceiling(1.2 * students);

            double totalPrice = (totalFlourPkgs * priceFlourPkg) + (priceEggsPerStudent * students) + (aprons * pricePerApron);

            if (totalPrice <= budget)
            {
                Console.WriteLine("Items purchased for {0:f2}$.", totalPrice);
            }
            else
            {
                Console.WriteLine("{0:f2}$ more needed.", totalPrice - budget);
            }
        }
    }
}