function right()
  turtle.turnRight()
  turtle.forward()
  turtle.turnRight()
end

function left()
  turtle.turnLeft()
  turtle.forward()
  turtle.turnLeft()
end

function move(area)
  local totalarea = area*2
  local lengthdetection = 0
  local direction = 'right'

  for i = 1,totalarea do
    turtle.forward()
    lengthdetection =lengthdetection + 1
    if lengthdetection == 5 then
      if direction == 'right' then
        direction = 'left'
        right()
      end
      if direction == 'left'then
        direction = 'right'
        left()
      end
      lengthdetection = 0
    end
  end
end


write('Enter Area')
area = read()
move(area)