print("Inside of world/ids, scan from")
write("0-")
input = tonumber(read())

for i=0,#input do
	if fs.exists("world/ids/" ..i) then
		a = fs.list("world/ids/" ..i)
		if #a == 0 or #a == nil then
			fs.delete("world/ids/" ..i)
		end
	end
end