function turnL()
    turtle.turnLeft()
    go()
    go()
    go()
    turtle.turnLeft()
end

function turnR()
    turtle.turnRight()
    go()
    go()
    go()
    turtle.turnRight()
end

function go()
    turtle.dig()
    turtle.forward()
    turtle.digUp()
    turtle.digDown()
end

function repete(rep,rep2)
    cpt = 0
    while (rep2>cpt) do
        for i=1,rep do
            go()
        end
        turnL()
        for i=1,rep do
            go()
        end
        turnR()
        cpt = cpt+1
    end
end



print("combien de longueur voulez vous ?")
rep = read()
rep = rep+0  -- mise en int

print("combien de couloir voulez vous ?")
rep2 = read()
rep2 = rep2+0


repete(rep,rep2)