using System;

namespace ConsoleApp9
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = 5;

            for (int j = 1; j <= n; j++)
            {
                for (int i = 1; i <= n; i++)
                {
                     if (j == i || i == 5 && j == 1 || i == 4 && j == 2 || i == 2 && j == 4 || i == 1 && j == 5)
                    {
                        Console.Write("X ");
                    }
                    else
                    {
                        Console.Write("O ");
                    }
                }
                Console.WriteLine();
            }
        }
    }
}