raw = [x.split(" ") for x in open("log.txt")]
rmp = {} 
for ip, traffic in raw: 
	if ip in rmp: 
		rmp[ip] += int(traffic) 
	else: 
		rmp[ip] = int(traffic)
lst = list(rmp.items())
#print(lst) 
lst.sort(key=lambda x: x[1], reverse=True)
print ("\n".join(["%s\t%d" % (host, traff) for host, traff in lst]))