escalera

print("Combustible a consumir: ")
fuel=read()

turtle.refuel(tonumber(fuel))

turtle.forward()
while true do
    for i=1,2,1 do
        while turtle.detectDown() do
            turtle.digDown()
            turtle.digUp()
        end
        turtle.down()
        while turtle.detectDown() do
            turtle.dig()
        end
        turtle.forward()
    end
    turtle.turnLeft()
    while turtle.detect() do
        turtle.dig()
    end
    turtle.forward()
end