BeerStock

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


class BeerStock
{
    static void Main(string[] args)
    {
        long beers = long.Parse(Console.ReadLine());
        string types = Console.ReadLine();
        long typeOfNumber = 0;
        long typeOfNumber2 = 0;

        while (types != "Exam Over")
        {
            string[] split = types.Split(' ');
            typeOfNumber2 = long.Parse(split[0]);
            string typeOf = (split[1]);

            switch (typeOf)

            {
                case "beers":
                    typeOfNumber += typeOfNumber2;
                    break;

                case "cases":
                    typeOfNumber += 24 * typeOfNumber2;
                    break;
                case "sixpacks":
                    typeOfNumber += 6 * typeOfNumber2;
                    break;

                default:
                    Console.WriteLine("Not a beer");
                    break;
            }

            types = Console.ReadLine();
        }



        typeOfNumber = typeOfNumber - (typeOfNumber / 100);
        if (typeOfNumber < beers)
        {
            long beersNeeded = beers - typeOfNumber;
            long cases = beersNeeded / 24;
            beersNeeded = beersNeeded % 24;
            long sixpacks = beersNeeded / 6;
            beersNeeded = beersNeeded % 6;
            Console.WriteLine(
                    "Not enough beer. Beer needed: {0} cases, {1} sixpacks and {2} beers.",
                    Math.Abs(cases),
                    Math.Abs(sixpacks),
                    Math.Abs(beersNeeded));

        }

        else
        {
            long beersLeft = beers - typeOfNumber;
            long cases = beersLeft / 24;
            beersLeft = beersLeft % 24;
            long sixpacks = beersLeft / 6;
            beersLeft = beersLeft % 6;
            Console.WriteLine(
                                "Cheers! Beer left: {0} cases, {1} sixpacks and {2} beers.",
                    Math.Abs(cases),
                    Math.Abs(sixpacks),
                    Math.Abs(beersLeft));
        }
    }
}