using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using static System.Console;


namespace Problem_Solving
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            int columnAbove = n - 2;
            int spaceAbove = 1;
            for (int i = 0; i < n; i++)
            {
                int col = i > (n / 2) ? columnAbove : 2 * i + 1;
                int space = i > (n / 2) ? spaceAbove : (n / 2) - i;
                for (int k = 0; k < space; k++)
                {
                    Write(" ");
                }
                for (int j = 1; j <= col; j++)
                {
                    Write("*");
                }
                WriteLine();
                if (i > (n / 2))
                {
                    columnAbove -= 2;
                    spaceAbove++;
                }
            }
        }

    }

}