place

print("longueur : ")
print("largeur : ")
local longueur = io.read()
local largeur = io.read()
local k=1


function itemcount()
 while turtle.getItemCount(k) < 1 do
  k = k + 1
  turtle.select(k)
 end
end

for j = 1, largeur, 1 do

    for i = 1, longueur-1, 1 do
        itemcount()
        turtle.placeDown()
        turtle.forward()
         if turtle.detectDown() then
         else
          turtle.placeDown()
         end
    end

if (j % 2 == 0) then
    turtle.turnRight()
    turtle.forward()
    turtle.turnRight()
else
    turtle.turnLeft()
    turtle.forward()
    turtle.turnLeft()
end
end