Crown

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int n = Integer.parseInt(scanner.nextLine());

        int width = 2 * n - 1;
        int height = n / 2 + 4;

        System.out.printf("@%1$s@%1$s@%n", doMagic(" ", (width - 3) / 2));
        int k = 0;
        int count = n - 3;
        for (int i = 0, b = 0, c = -1; i < height - 4; i++, b++, c += 2) {

            System.out.printf("*%1$s%2$s%5$s%4$s%2$s%5$s%1$s%n",
                    doMagic(".", b) + "*",
                    doMagic(" ", count),
                    doMagic(".", b),
                    (i != 0 && i <= n / 2 - 1) ? doMagic(".", c) + "*" : doMagic(".", c),
                    i != n/2 -1 ? "*":"");
            k = 2;
            count -= k;
        }


        for (int i = 0; i < 3; i++) {
            String line = i == 0 ? String.format("*%1$s%2$s*.*%2$s%1$s*",
                    doMagic(".",n/2),
                    doMagic("*",(width - (n +5)) / 2)) :
                    doMagic("*",width);
            System.out.println(line);
        }
    }

    static String doMagic(String text, int count) {
        StringBuilder sb = new StringBuilder();
        while (count-- > 0) sb.append(text);
        return sb.toString();
    }
}