class program
    {
    define halfturn()
        {
        turnleft();
        turnleft();
        }

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

    define sigueCamino()
        {
        while(nextToABeeper)
            {
            move();
            if( notNextToABeeper )
                {
                halfturn();
                move();
                  turnleft();
                  move();
                  if( notNextToABeeper )
                      {
                      halfturn();
                      move();
                      move();
                      }
                }
            }
        halfturn();
        move();
        turnright();
        }

    define recogeCamino()
        {
        while(nextToABeeper)
            {
            pickbeeper();
            move();
            if( notNextToABeeper )
                {
                halfturn();
                move();
                  turnleft();
                  move();
                  if( notNextToABeeper )
                      {
                      halfturn();
                      move();
                      move();
                      }
                }
            }
        halfturn();
        move();
        turnright();
        }

    program()
        {

        sigueCamino();
        recogeCamino();
        turnoff();
        }

    }