#!/usr/bin/env python3
#coding:utf-8

import math
import string
from sys import stdin
# import numpy as np
# from matplotlib import pyplot as plt

	
def main():
	read=stdin.readline

	#edit here!
	n=int(read())

	if n%2==1:
		print(1,(n+1)//2)
	else:
		print(2,n//2)
	
	while True:
		t=int(read())
		if t==0:
			break
		else:
			k,x=map(int,read().split())
			if x>(n+1)//2:
				y=n//2+1
				print(k,x-y)
			else :
				y=n//2+1
				print(k,x+y)
if __name__ == '__main__':
	main()