#!/usr/bin/env python
from random import randint
from sys import argv, stdin
if len(argv) == 1:
	f=stdin
else:
	f=open(argv[1])
s=''
p=1
while 1:
	l=f.readline()
	if not l:
		break
	if randint(1,p) == 1:
		s=l
	p=p+1
print s,