local t = { ... }
local n = 1
local p = 0
turtle.select(n)
local mx = t[1]
turtle.forward()
turtle.up()
for i = 1,mx do
  print(n)
  while turtle.getItemCount(n) < 3 do
    n = n + 1
    if n > 16 then
      n = 1
    end
    turtle.select(n)
    end
  turtle.placeDown()
  turtle.turnLeft()
  turtle.place()
  turtle.turnLeft()
  turtle.turnLeft()
  turtle.place()
  turtle.turnLeft()
  turtle.forward()
  p = p + 1
end
for i = 1,p do
  turtle.back()
end
turtle.up()
for i = 1,mx do
  print(n)
  while turtle.getItemCount(n) < 3 do
    n = n + 1
    if n > 16 then
      n = 1
    end
    turtle.select(n)
    end
  turtle.placeUp()
  turtle.turnLeft()
  turtle.place()
  turtle.turnLeft()
  turtle.turnLeft()
  turtle.place()
  turtle.turnLeft()
  turtle.forward()
  p = p + 1
end
for i = 1,p do
  turtle.back()
end
turtle.back()

turtle.back()
turtle.down()