stair placer

function refuel()
        repeat
                turtle.select(1)
                if turtle.getItemCount( turtle.getSelectedSlot() ) == 0 then
                    print("Out of fuel! Put fuel in first slot.")
                    print("Press any key to continue")
                    os.pullEvent("key")
                end
        until turtle.getItemCount( turtle.getSelectedSlot() ) > 0
        if turtle.getFuelLevel() ~= "unlimited" and turtle.getFuelLevel() < 1 then
                    print("refueling")
                    turtle.refuel(1)
        end
end

steps = tonumber(read())

for a = 1,steps,1 do
        refuel()
        turtle.select(2)
        turtle.placeDown()
        turtle.back()
        turtle.down()
end