local fs = require("filesystem")
local sh = require("shell")
local serialization = require("serialization")
local args= sh.parse(...)
local uc = require("unicode")

function get(path)
  local result = {}
  for value in fs.list(path) do
    if uc.sub(value,uc.len(value),uc.len(value)) ~= '/' then
      result[#result+1] = value
    else
      result[path..value] = get(path..value)
    end
  end
  return result
end

local path = tostring(args[1])

local arr = get(path)

local size = 0

for val,val2 in pairs(arr) do
  if type(val) == 'string' then
    if uc.sub(val,uc.len(val),uc.len(val)) == '/' then
      for value in fs.list(val) do
        print(val..value)
        size = size + fs.size(val..value)
      end
    else
      size = size + fs.size(val..value)
    end
  elseif type(val) == 'number' then
    size = size + fs.size(path..arr[val])
  end
end

print(size)
print(serialization.serialize(get(tostring(args[1]))))