gistfile1.txt

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

namespace цикл
{
    class Program
    {
        static void Main(string[] args)
        {
            int discount = 20;

            while (discount -- > 0) 
            {
                Console.WriteLine("Скидка!");
            }
        }
    }
}