#!/usr/bin/env lua51
-- (find-es "page" "compare-tp-and-home")

-- returns nil if can't read
readfile = function (fname)
    local f = io.open(fname, "r")
    if f then
      local bigstr = f:read("*a")
      f:close()
      return bigstr
    end
  end

for li in io.lines() do
  local fname1 = arg[1]..li
  local fname2 = arg[2]..li
  local f1 = readfile(fname1)
  local f2 = readfile(fname2)
  if f1 ~= f2 then print(li) end
end