#include <algorithm>
#include <iostream>
#include <iomanip>
#include <complex>
#include <cstring>
#include <cstdlib>
#include <string>
#include <vector>
#include <cstdio>
#include <cmath>
#include <map>
#include <set>
using namespace std;
//#pragma comment(linker,"/STACK:102400000,102400000")
 
int startBlackX[26] = {2,4,6,8,1,3,5,7,9,2,4,6,8,2,4,6,8,1,3,5,7,9,2,4,6,8};
int startBlackY[26] = {1,1,1,1,2,2,2,2,2,3,3,3,3,5,5,5,5,6,6,6,6,6,7,7,7,7};
int startWhiteX[14] = {1,3,5,7,9,2,4,6,8,1,3,5,7,9};
int startWhiteY[14] = {3,3,3,3,3,4,4,4,4,5,5,5,5,5};
int bitSetZeroX[8] = {2,4,6,8,2,4,6,8};
int bitSetZeroY[8] = {3,3,3,3,5,5,5,5};
int bitSetOneX[8] = {2,4,6,8,2,4,6,8};
int bitSetOneY[8] = {2,2,2,2,6,6,6,6};
int endBlackX[24] = {1,3,5,7,1,3,5,7,1,2,3,4,5,6,7,8,1,2,3,4,5,6,7,8};
int endBlackY[24] = {1,1,1,1,7,7,7,7,8,8,8,8,8,8,8,8,9,9,9,9,9,9,9,9};
int endWhiteX[4] = {1,3,5,7};
int endWhiteY[4] = {4,4,4,4};
 
vector <int> xs, ys;
 
void putBlack(int x, int y)
{
	if(xs.size() % 2 == 1)
	{
		xs.push_back(0);
		ys.push_back(0);
	}
	xs.push_back(x);
	ys.push_back(y);
}
 
void putWhite(int x, int y)
{
	if(xs.size() % 2 == 0)
	{
		xs.push_back(0);
		ys.push_back(0);
	}
	xs.push_back(x);
	ys.push_back(y);
}
 
int gray[257];
 
void bitChange(int mask0, int mask1)
{
	for(int i = 0; i < 8; i++)
	{
		bool b0 = (mask0 & (1<<i));
		bool b1 = (mask1 & (1<<i));
		if(b0 == 0 && b1 == 1)
			putWhite(bitSetOneX[i], bitSetOneY[i]);
		if(b0 == 1 && b1 == 0)
			putBlack(bitSetZeroX[i], bitSetZeroY[i]);
	}
}
 
int MAIN()
{
	for(int i = 0; i < 256; i++)
		gray[i] = (i ^ (i>>1));
	gray[256] = 0;
	for(int i = 0; i < 14; i++)
		putWhite(startWhiteX[i], startWhiteY[i]);
 
	for(int i = 0; i < 26; i++)
		putBlack(startBlackX[i], startBlackY[i]);
 
	int state = 0;
	for(int i = 0; i < 24; i++)
	{
		for(int j = 0; j < 255; j++)
		{
			bitChange(gray[state], gray[state+1]);
			state ++;
			state %= 256;
		}
		putBlack(endBlackX[i], endBlackY[i]);
	}
 
	
	for(int i = 0; i < 4; i++)
	{
		for(int j = 0; j < 255; j++)
		{
			bitChange(gray[state], gray[state+1]);
			state ++;
			state %= 256;
		}
		putWhite(endWhiteX[i], endWhiteY[i]);
	}
	
 
	int n;
	cin >> n;
	//cout << xs.size() << endl;
	for(int i = 0; i < n; i++)
		cout << xs[i] << " " << ys[i] << endl;
	return 0;
}
 
int main()
{
	#ifdef LOCAL_TEST
		freopen("in.txt", "r", stdin);
		freopen("out.txt", "w", stdout);
	#endif
	ios :: sync_with_stdio(false);
	cout << fixed << setprecision(16);
	return MAIN();
}