colonne

local i=1
local slotNum=0
x=tonumber(io.read())
turtle.select(1)
repeat
    while turtle.getItemCount() == 0 do
        slotNum = slotNum + 1
        turtle.select(slotNum)
    end
    turtle.up()
    turtle.placeDown()
    i=i+1
    sleep(0.1)
until i == x
turtle.forward()
repeat
    turtle.down()
    i = i-1
until i == 1