#!/usr/bin/env python2.2

from __future__ import division

import sys
import re

re1 = re.compile("^\s*([0-9]+)\s*(.*)$")

def nice_num( s ):
  anz = len(s) // 3
  rst = len(s) % 3
  if rst == 0:
    rst = 3
    anz = anz - 1
    
  erg = s[0:rst]  # rst is offset in string

  for i in range( anz ):
    pos = rst + (i * 3)
    erg = erg + "." + s[ pos : pos + 3]

  return erg
#

line = sys.stdin.readline()
while line:
  line = line.strip()
  g = re1.search( line )
  if g:
    num = g.group(1)
    print "%20s  %s" % (nice_num( num ), g.group(2)) 
    line = sys.stdin.readline()
  else:
    line = None