package mask;


import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Mask {

    public static String strRepeat(String str, int count) {
        String result = "";
        for (int i = 0; i < count; i++) {
            result +=  str;
        }
        return result;
    }

    public static void main(String[] args) throws IOException {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

        int n = Integer.parseInt(reader.readLine());
        int length = 4 * n - 1;
        int width = (2 * n) + 2;
        int spaces = n - 3;

        System.out.printf("%s/|  |\\\n", strRepeat(" ", n-2));


        for (int i = 1; i < n-1; i++) {
            System.out.printf("%s/%s|  |%s\\\n",
                    strRepeat(" ", spaces),
                    strRepeat(" ", i),
                    strRepeat(" ", i));
            spaces--;
        }

        System.out.println(strRepeat("-", width));






        /*
        System.out.printf("|%s_%s_%s|\n", strRepeat(" ", n/3),
                strRepeat(" ", width - (2 * (n/3) + 4)),
                strRepeat(" ", n/3));

        System.out.printf("|%s@%s@%s|\n", strRepeat(" ", n/3),
                strRepeat(" ", width - (2 * (n/3) + 4)),
                strRepeat(" ", n/3));
        */

        String t = strRepeat(" ",(n - 3) / 2);
        System.out.println("|" + t +  "_" + strRepeat(" ",2*n+2 - 2*(t.length() +2)) + "_" + t  + "|");
        System.out.println("|" + t  +  "@" + strRepeat(" ",2*n+2 - 2*(t.length() +2)) + "@" + t  + "|");









        for (int i = 0; i < n / 2; i++) {
            System.out.printf("|%s|\n", strRepeat(" ", width - 2));
        }

        System.out.printf("|%sOO%s|\n", strRepeat(" ", n-1), strRepeat(" ", n-1));
        System.out.printf("|%s/  \\%s|\n", strRepeat(" ", n-2), strRepeat(" ", n-2));
        System.out.printf("|%s||||%s|\n", strRepeat(" ", n-2), strRepeat(" ", n-2));
        System.out.printf("\\%s/\n", strRepeat("`", width - 2));

        for (int i = 2; i <= n; i++) {
            System.out.printf("%s%s%s\n", strRepeat("\\", i),
                    strRepeat("`", width - (2 * i)),
                    strRepeat("/", i));
        }

        System.out.printf("%s%s", strRepeat("\\", width/2), strRepeat("/", width/2));

    }
}