Nakov's beers1

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

namespace NakovBeer
{
    class NakovBeer
    {
        static void Main()
        {
            int quantity;
            int beerCounter=0;
            for (int loops = 1; loops < 999; loops++)
            {

                string inputData = Console.ReadLine();

                if(inputData=="End")
                    {
                        break;
                    }
                string[] data = inputData.Split(' ');
            quantity = int.Parse(data[0]);
                    if (quantity > 99 || quantity < 1)
                    {
                        Console.WriteLine("NOT CORECT Please try adain");
                        quantity=0;
                    }

                string type = data[1];
                if(type=="stacks")
                {
                   beerCounter +=quantity*20;
                }
                else
                {
                    beerCounter += quantity;
                }
           }
            int stacks = beerCounter / 20;
            int beers = beerCounter % 20;
            Console.WriteLine("{0} stacks + {1} beers",stacks,beers);
        }
    }
}