Triangle

import java.util.Scanner;

public class TriangleEye {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int n = Integer.parseInt (scanner.nextLine());

        String firstLine = repeatStr("#", 4*n + 1);
        System.out.println(firstLine);

        for (int i = 0; i <n ; i++) {
           if ( i ==n/2){
                String firstForLoop = repeatStr(".", 1 +i )
                        + repeatStr("#", 2*n - 1 - 2*i)
                        + repeatStr(" ", (1 + 2*i - 3)/2)
                        + "(@)"
                        + repeatStr(" ", (1 + 2*i - 3)/2)
                        + repeatStr("#", 2*n - 1 - 2*i)
                        + repeatStr(".", 1 +i );
                System.out.println(firstForLoop);
            }
            else {
               String firstForLoop = repeatStr(".", 1 + i)
                       + repeatStr("#", 2 * n - 1 - 2 * i)
                       + repeatStr(" ", 1 + 2 * i)
                       + repeatStr("#", 2 * n - 1 - 2 * i)
                       + repeatStr(".", 1 + i);
               System.out.println(firstForLoop);
           }
        }

        for (int i = 0; i < n; i++) {
            String lastForLoop = repeatStr(".", n+1 +i)
                    + repeatStr("#", 2*n - 1 - 2*i)
                    + repeatStr(".", n+1 +i);
            System.out.println(lastForLoop);

        }

    }
    static String repeatStr(String strToRepeat, int count) {
        String text = "";
        for (int i = 0; i < count; i++) {
            text += strToRepeat;
        }
        return text;
    }
}