wedding-seats

using System;
using System.Threading;

namespace TypeCasting
{
    internal class Program
    {
    static void Main(string[] args)
        {
            Thread.CurrentThread.CurrentCulture = new System.Globalization.CultureInfo("en-US");
            string letterLastSector = Console.ReadLine();
            char ch = letterLastSector.ToCharArray()[0];
            int countRowsFirstSector = int.Parse(Console.ReadLine());
            int seatsCountOnOddRow = int.Parse(Console.ReadLine());
            int totalSeatsCount = 0;
            int x = 1;

            for (int i = 'A'; i <= ch; i++)
            {
                for (int j = 1; j < countRowsFirstSector + x; j++) // rows
                {
                    if (j % 2 == 1)
                    {
                        for (int k = 'a' ; k < 'a' + seatsCountOnOddRow; k++)
                        {
                            Console.WriteLine($"{(char)i}{j}{(char)k}");
                            totalSeatsCount++;
                        }
                    }
                    else
                    {
                        for (int k = 'a'; k < 'a' + seatsCountOnOddRow + 2; k++)
                        {
                            Console.WriteLine($"{(char)i}{j}{(char)k}");
                            totalSeatsCount++;
                        }
                    }
                }
                x++;
            }
            Console.WriteLine(totalSeatsCount);
        }
    }
}