#!/usr/bin/python
#
# $ find files | bytime.py
#
# Sorts a file list, by time. Oldest first, recent last.
#

import sys
import os
import os.path
import stat


def run(filenames):
  bydir = { }
  for fname in filenames:
    d = os.path.dirname(fname)
    if d not in bydir:
      bydir[d] = set()
    bydir[d].add(fname)

  info = [ ]
  for d, s in bydir.items():
    if len(s) > 1:
      ### for specific usage
      # if a directory has more than one video, skip it
      continue
    for fname in s:
      s = os.stat(fname)
      info.append((s.st_mtime, fname))

  for t, fname in sorted(info):
    print(fname)


if __name__ == '__main__':
  run(f.strip() for f in sys.stdin.readlines())