floor

local taille = ...
local mode = false
local sens = false
if taille % 2 == 0 then
    mode = true

end
local emplacement = 1
turtle.select(emplacement)
local function verif()
local inv = turtle.getItemCount(emplacement)
if inv == 0 then
    if emplacement < 16 then
        turtle.select(emplacement+1)
        emplacement = emplacement+1
    else
        turtle.select(1)
    end
end
end
local function av()  while not turtle.forward()   do end end
local function rb()  while not turtle.back()      do end end
local function mt()  while not turtle.up()        do end end
local function ds()  while not turtle.down()      do end end
local function ga()  while not turtle.turnLeft()  do end end
local function dr()  while not turtle.turnRight() do end end
local function cr()  turtle.dig()       end
local function ucr()  turtle.digUp()     end
local function dcr()  turtle.digDown()   end
local function p()  turtle.place()     end
local function pu()  turtle.placeUp()   end
local function pd()  turtle.placeDown() end
local function ss(s) turtle.select(s)   end

--cycle
local i = 0
while i < taille-1 do
av()
i=i+1
end
if not mode then
        while i < (tonumber(taille)-1) do
        av()
        i=i+1
    end
else
ga()
end
local i = 0
repeat
local j = 0

repeat
    rb()
verif()
p()
    j = j+1
until j == (tonumber(taille)-1)
if sens then
ga()
sens = false
else
dr()
sens = true
end
rb()
verif()
p()
if sens then
dr()
else
ga()
end
i=i+1
until i == (tonumber(taille))