class program
{
    define turnright()
    {
        iterate(3)
            turnleft();
    }

    define subir()
    {
        turnleft();
        move();
        turnright();
        move();
        move();
    }

    define orientate_norte()
    {
        while( notFacingNorth )
            turnleft();
    }

    program()
    {
        orientate_norte();
        move();
        while( leftIsClear )
            subir();
        turnoff();
    }

}