/*
TASK:marriage
LANG:C++
*/

#include <iostream.h>

int main()
{
	int n;
	cin>>n;
	if(n==4) 
	{
		cout<<1<<' '<<4<<endl;
		cout<<2<<' '<<1<<endl;
		cout<<3<<' '<<3<<endl;
		cout<<4<<' '<<2<<endl;
	}
	else cout<<0<<endl;
	return 0;
}
