test2

temp = true
while temp do
  print "input size"
  size = read("*n")
  build(size)
  temp = false
end

function build(x)
  for i=0,x,1 do
    buildCol(x)
    turtle.forward()
  end
end

function buildCol(x)
  turtle.placeDown()
  turtle.turnLeft()
  y= (x-1)/2
  for i=0,y,1 do
    turtle.forward()
    turtle.placeDown()
  end
  turnAround()
  forward(y)
  for i=0,y,1 do
    turtle.forward()
    turtle.placeDown()
  end
  turnAround()
  forward(y)
  turtle.turnRight()
end

function forward(x)
  for i=0,x,1 do
    turtle.forward()
  end
end
function turnAround()
  turtle.turnLeft()
  turtle.turnLeft()
end