pkqk

import cgi
import os

from google.appengine.ext.webapp import template
from google.appengine.api import users
from google.appengine.ext import webapp
from google.appengine.ext.webapp.util import run_wsgi_app
from google.appengine.ext import db
from google.appengine.api import memcache
from google.appengine.api import urlfetch

pkqk

import sys

def process_lines(lines):
	last_line = None
	for line in lines:
		if line != last_line:
			sys.stdout.write(line)
		last_line = line 

process_lines(sys.stdin.readlines())