using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Stop
{
    class Program
    {
        static void Main(string[] args)
        {

            int num = int.Parse(Console.ReadLine());
            string left = "";
            string right = "";
            string center = "";
            int ia = 0;

            for (int row = 1; row <= num + 2; row++)
            {
                if (row == 1)
                {
                    left = new string('.', num+2  - row);
                    center = new string('_', (( 2*num)+1));
                    right = new string('.', num+2  - row);
                }
                else
                {
                    if (row == num+2)
                    {
                        left = new string('.', num + 2 - row);
                        left = left + "/";
                        right = new string('.', num + 2 - row);
                        right = "\\" + right;
                        //center = new string('_', (2 * num - 1) + ia);
                        int stop = (2 * num - 3) + ia - 4;
                        int stop_del = stop / 2;

                        string center1 = new string('_', stop_del);
                        center = "/" + center1+"STOP!"+center1 + "\\";

                        //center = "/" + center + "\\";
                    }
                    else
                    {
                        left = new string('.', num + 2 - row);
                        left = left + "/";
                        right = new string('.', num + 2 - row);
                        right = "\\" + right;
                        center = new string('_', (2 * num - 3) + ia);
                        center = "/" + center + "\\";
                    }
                }
                ia = ia + 2;
                Console.Write(left);
                Console.Write(center);
                Console.Write(right);
                Console.WriteLine();

            }
            ia = ia - 6;
            for (int row_next = num; row_next >= 1; row_next--)
            {
                left = new string('.', num  - row_next);
                left = left + "\\";
                right = new string('.', num  - row_next);
                right = "/" + right;
                center = new string('_', 2 * row_next + ia+1);
                center = "\\" + center + "/";

                Console.Write(left);
                Console.Write(center);
                Console.Write(right);
                Console.WriteLine();
            }


        }

    }
}