xxxxx

using System;

public class X
{
    public static void Main()
    {
        int n = int.Parse(Console.ReadLine());
        int outterSpaces = 0;
        int innerSpaces = n - 2;
        for (int i = 0; i < n / 2; i++)
        {
            Console.WriteLine("{0}{1}{2}{1}",
                new string(' ', outterSpaces),
                "x",
                new string(' ', innerSpaces)
                );
            innerSpaces -= 2;
            outterSpaces++;
        }
        Console.WriteLine("{0}{1}", new string(' ', n/2), "x");

        for (int i = 0; i < n / 2; i++)
        {
            innerSpaces += 2;
            outterSpaces--;
            Console.WriteLine("{0}{1}{2}{1}",
                new string(' ', outterSpaces),
                "x",
                new string(' ', innerSpaces)
                );
        }
    }
}