#!/usr/bin/python
#Copyleft (C) 1996 William Totten
#biell@udel.edu

from rand import *

srand(2)
#This library implements a random element list
def rlist(n):
	list=[]
	i=1
	while(i<n):
		list.append((rand()*rand())/rand())
		i=i+1
	return list
		

if __name__ == '__main__':
	from sys import argv
	from posix import times
	n=eval(argv[1])
	t=times()[0]
#	print rlist(n), "\nUser Time: ", times()[0] - t
	i=1
	for j in rlist(n):
		print i, j
		i=i+1