Beer Stock

using System;

namespace BeerStock
{
    class Program
    {
        static void Main(string[] args)
        {
            int neededBeers = int.Parse(Console.ReadLine());
            long deliveredBeers = 0;
            string command;

            while ((command = Console.ReadLine()) != "Exam Over")
            {
                var package = command.Split(' ');
                long amount = long.Parse(package[0]);
                string type = package[1];

                if (type == "sixpacks")
                {
                    amount *= 6;
                }
                else if (type == "cases")
                {
                    amount *= 24;
                }
                deliveredBeers += amount;
            }

            deliveredBeers -= deliveredBeers / 100;
            long diff = Math.Abs(neededBeers - deliveredBeers);
            long cases = diff / 24;
            long sixpacks = diff % 24 / 6;
            long beers = diff % 6;

            if (deliveredBeers >= neededBeers)
            {
                Console.WriteLine($"Cheers! Beer left: {cases} cases, {sixpacks} sixpacks and {beers} beers.");
            }
            else
            {
                Console.WriteLine($"Not enough beer. Beer needed: {cases} cases, {sixpacks} sixpacks and {beers} beers.");
            }
        }
    }
}