#!/usr/bin/ruby
class Integer
  def jpy_comma
    self.to_s.gsub(/(\d)(?=(\d{3})+(?!\d))/, '\1,')
  end
end

def int_str?(s)
  Integer(s)
  true
rescue ArgumentError
  false
end

v = ARGV[0]
if int_str?(v)
  atm = ((v.to_f / 125).round) * 125
  puts "%s --> ATM:%s" % [v.to_i.jpy_comma, atm.jpy_comma]
else
  atm = "error"
  puts "error"
end