#include <cstdio>
#include <iostream>
#include <string>

using namespace std;

int main()
{
    int a = 3;
	int b = 2;
	int *pa = &a;
	int *pb = &b;

	(*pa) ^= (*pb) ^= (*pa) ^= (*pb);

	cout << *pa << " " << *pb << endl;
	cout << a << " " << b << endl;
}