#!/usr/bin/env python
import sys
import time
import re

PATTERN = re.compile('^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}/\d{1,2}$')

def subnet_to_ip_range(buff):
	if PATTERN.match(buff) == None:
		raise ValueError("Input has non IPv4 subnet line(s)")
	st, sub = buff.split('/')
	st = [int(x, 10) for x in st.split('.')]
	sub = 1<<(32-int(sub, 10))
	tot = 0
	for x in st:
		tot *= 256
		tot += x
	return str(tot)+'-'+str(tot+sub)
buff = ''
while True:
	c = sys.stdin.read(1)
	if c == '\n' or c == '':
		buff = buff.strip()
		if len(buff) != 0:
			print subnet_to_ip_range(buff)
		buff = ''
	if c == '':
		break
	buff += c