10.RectangleWithStars

using System;

namespace _10.RectangleWithStars
{
    class RectangleWithStars
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            int colsCnt = n * 2;
            int rowsCnt;

            if (n % 2 == 0)
            {
                rowsCnt = n + 1;
            }
            else
            {
                rowsCnt = n + 2;
            }

            for (int row = 0; row < rowsCnt; row++)
            {
                for (int col = 0; col < colsCnt; col++)
                {
                    if (row == 0 || row == rowsCnt - 1)
                    {
                        Console.Write("%");
                    }
                    else if (col == 0 || col == colsCnt - 1)
                    {
                        Console.Write("%");
                    }
                    else if (row == rowsCnt / 2 && (col == colsCnt / 2 || col == (colsCnt - 1) / 2))
                    {
                        Console.Write("*");
                    }
                    else
                    {
                        Console.Write(" ");
                    }

                }
                Console.WriteLine();
            }

        }
    }
}