02.BeerStock

gistfile1.txt

using System;

namespace Problem_2___Beer_Stock
{
    class BeerStock
    {
        static void Main(string[] args)
        {
            long reservedBeers = long.Parse(Console.ReadLine());
            long beers = 0;
            long sixPacks = 0;
            long cases = 0;

            while (true)
            {
                string purchase = Console.ReadLine();

                if (purchase == "Exam Over")
                {
                    break;
                }
                else
                {
                    string[] amountAndType = purchase.Split(' ');

                    if (amountAndType[1] == "beers")
                    {
                        beers += long.Parse(amountAndType[0]);
                    }
                    else if (amountAndType[1] == "sixpacks")
                    {
                        sixPacks += 6 * long.Parse(amountAndType[0]);
                    }
                    else if (amountAndType[1] == "cases")
                    {
                        cases += 24 * long.Parse(amountAndType[0]);
                    }
                }
            }

            long wholeAmount = beers + sixPacks + cases;

            if (wholeAmount >= 100)
            {
                wholeAmount = wholeAmount - (wholeAmount / 100);
            }

            if (wholeAmount >= reservedBeers)
            {
                long leftBeers = wholeAmount - reservedBeers;
                long leftCases = leftBeers / 24;
                long leftSixPacks = (leftBeers - leftCases * 24) / 6;
                long leftBotles = leftBeers - (leftCases * 24) - (leftSixPacks * 6);
                Console.WriteLine("Cheers! Beer left: {0} cases, {1} sixpacks and {2} beers.",
									leftCases, leftSixPacks, leftBotles);
            }
            else
            {
                long insufficientBeers = reservedBeers - wholeAmount;
                long insufficientCases = insufficientBeers / 24;
                long insufficientSixPacks = (insufficientBeers - insufficientCases * 24) / 6;
                long insufficientBottles = insufficientBeers - (insufficientCases * 24) - (insufficientSixPacks * 6);
                Console.WriteLine("Not enough beer. Beer needed: {0} cases, {1} sixpacks and {2} beers.",
									insufficientCases, insufficientSixPacks, insufficientBottles);
            }
        }
    }
}