#!/bin/sh
''''[ ! -z $VIRTUAL_ENV ] && exec python -u -- "$0" ${1+"$@"}; command -v python3 > /dev/null && exec python3 -u -- "$0" ${1+"$@"}; exec python2 -u -- "$0" ${1+"$@"} # '''

import fileinput
import semantic_version
import os
import sys
import re

ver_re = r'.*?(\d+\.\d+\.\d+(-\d+)?)'

versions = []
for line in fileinput.input():
	line = line.strip()
	m = re.match(ver_re, line)
	if m:
		versions.append((semantic_version.Version(m.group(1)), line))
if len(versions) > 0:
    print(sorted(versions)[-1][1])
