#include <iostream>
using namespace std;

int main()
{
  int v =8, *r, *s;
  int *p;
  int q = 100;
  
  p= &q;
  r =p;
  *p = 20;
  
  p= new int;
  *r = 30;
  q=v;
  s=p;
  *s=50;
 
 cout << *p << endl;
cout << q << endl;
  cout << *r << endl;
  cout << v << endl;
  cout << *s << endl;  
}