#include <iostream>
using namespace std;
void test() {
  int a=5;
  cout << a << endl;
  int * b;
  b=&a;
  cout << b << endl;
  cout << *b << endl;
  a=5;
  cout << *b << endl;
  int c= a+*b;
  cout << c << endl;
  cout << c << endl;
  c= a+*b;
  c= a+(*b);
}