local tArgs = {...}

function digLayer(len, wid)
 for i=1, wid do
  for i=1, len-1 do
   if not turtle.dig() then
    turtle.select(1)
    turtle.placeUp()
    for i=1, 16 do
     turtle.select(i)
     turtle.dump()
    end
   end
   turtle.forward()
  end
  for i=1, len-1 do
   turtle.back()
  end
  turtle.turnRight()
  if not turtle.dig() then
   turtle.select(1)
   turtle.placeUp()
   for i=1, 16 do
    turtle.select(i)
    turtle.dump()
   end
  end
  turtle.forward()
  turtle.turnLeft()
 end
end

for i=1, tArgs[3] do
 digLayer(tArgs[1], tArgs[2])
 turtle.turnLeft()
 for i=1, tArgs[2] do
  turtle.forward()
 end
 turtle.turnRight()
 if not turtle.digDown() then
  turtle.select(1)
  turtle.placeUp()
  for i=1, 16 do
   turtle.select(i)
   turtle.dump()
  end
 end
 turtle.down()
end