#!/usr/bin/python
# surl - sort URLs by their last modification date

import urllib
import time
import sys

Date = {}
while 1:
    # we only read from stdin not from argv.
    ln = sys.stdin.readline()
    if not ln:
        break
    ln = ln.strip()
    try:
        u = urllib.urlopen(ln)
        date = time.mktime(u.info().getdate("date"))
        if not Date.has_key(date):
            Date[date] = []
        Date[date].append(ln)
    except:
        sys.stderr.write("%s: %s!\n" % (ln, sys.exc_info()[1]))

dates = Date.keys()
dates.sort()    # python 2.4 would have sorted
for d in dates:
    print "%s  %s" % (time.strftime("%Y-%m-%d %H:%M:%S", time.localtime(d)),
                    ", ".join(Date[d]))