Ticket Combination

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

namespace Ticket_Combination
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            var counter = 0;

            if (n >= 1 && n <= 10000)
            {
                for (char stadium = 'B'; stadium <= 76; stadium++)
                {
                    for (var sector = 'f'; sector >= 97; sector--)
                    {
                        for (var entrance = 'A'; entrance <= 67; entrance++)
                        {
                            for (int row = 1; row <= 10 ; row++)
                            {
                                for (int seat = 10; seat >= 1; seat--)
                                {
                                    if (stadium % 2 == 0)
                                    {
                                        string combination = stadium.ToString() + sector.ToString() +
                                            entrance.ToString() + row.ToString() + seat.ToString();
                                        int prize = stadium + sector + entrance + row + seat;
                                        counter++;
                                        if (n == counter)
                                        {
                                            Console.WriteLine($"Ticket combination: {combination}");
                                            Console.WriteLine($"Prize: {prize} lv.");
                                        }
                                    }
                                    else
                                        break;
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}