public class Staircase {
  public static void main (String [] args) {
    System.out.println("            +---+");
    System.out.println("            |   |");
    System.out.println("        +---+---+");
    System.out.println("        |   |   |");
    System.out.println("    +---+---+---+");
    System.out.println("    |   |   |   |");
    System.out.println("+---+---+---+---+");
    System.out.println("|   |   |   |   |");
    System.out.println("+---+---+---+---+");

  }
}