print("Combien de blocs fera votre tunnel ?")
blocs = read()
blocs = tonumber(blocs)
blocs = blocs * 2
print("Le minage va commencer !")

turtle.refuel(5)

repeat
    turtle.dig()
    turtle.forward()
    turtle.digUp()
    turtle.digDown()
    blocs = blocs - 1
until blocs == 0

turtle.turnRight()
turtle.turnRight()

repeat turtle.forward()
until turtle.detect()

print("Le minage est fini !")