using System;
class Program
{
static void Main()
{
int n = int.Parse(Console.ReadLine());
Console.WriteLine("x" + new string(' ', n - 2) + "x");
for (int i = 1; i < n / 2; i++)
{
Console.WriteLine(new string(' ', i) + "x" + new string(' ', (n - 2) - i * 2) + "x" + new string(' ', i));
}
Console.WriteLine(new string(' ', n / 2) + "x");
for (int j = 0; j < (n - 1) / 2; j++)
{
Console.WriteLine(new string(' ', (n / 2)-1 - j) + "x" + " " + new string(' ', j * 2) + "x");
}
}
}
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