#include <iostream>
using namespace std;

int main() {
	// your code goes here
	int a = 10;
	int b = 20;
	int &alink = a;
	int *aptr = &a;
	cout << "&a\t: " << &a << endl;
	cout << alink << "\t&alink\t: " << &alink << endl;
	cout << "&aptr\t: " << &aptr << endl;
	alink = b;
	cout << alink << "\t&alink\t: " << &alink << endl;
	return 0;
}