slot = 1
function reload()
  if(turtle.getItemCount(turtle.getSelectedSlot(slot)) < 3) then
    slot = slot + 1
  end
  if (slot > 16) then
    slot = 1
  end
  turtle.select(slot)
end

print("Fliesenleger")
print("Geben sie die laenge an x 3")
print("-----------------------")
lang = tonumber(read())
turtle.turnLeft()
turtle.turnLeft()
reload
for i = 1,lang, 1 do
  turtle.place()
  turtle.turnLeft()
  turtle.place()
  turtle.turnRight()
  turtle.turnRight()
  turtle.place()
  turtle.forward()
end