import java.util.Scanner;

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

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

        for (int row = 0; row < n - 2; row++) {
          if(row % 2 == 0){
            System.out.print(repeatStr("*", n - 2));
            System.out.print("\\");
            System.out.print(" ");
            System.out.print("/");
            System.out.println(repeatStr("*", n - 2));
          }else{
            System.out.print(repeatStr("-", n - 2));
            System.out.print("\\");
            System.out.print(" ");
            System.out.print("/");
            System.out.println(repeatStr("-", n - 2));
          }
        }

        System.out.print(repeatStr(" ", n-1));
        System.out.println("@");

        for (int row = 0; row < n - 2; row++){
          if(row % 2 == 0){
            System.out.print(repeatStr("*", n - 2));
            System.out.print("/");
            System.out.print(" ");
            System.out.print("\\");
            System.out.println(repeatStr("*", n -2));
          }else{
            System.out.print(repeatStr("-", n - 2));
            System.out.print("/");
            System.out.print(" ");
            System.out.print("\\");
            System.out.println(repeatStr("-", n - 2));
          }
        }
    }
    static String repeatStr(String strToRepeat, int count) {
        String text = "";

        for (int i = 0; i < count; i++) {
            text = text + strToRepeat;
        }

        return text;
    }

}