#include <vector>
#include <iostream>

class A
{
};

using namespace std;

int main( )
{	
        std::vector<A *> vect;
	vect.push_back( new A( ));
	vect.push_back( new A( ));
	vect.pop_back( );
	cout << "number of elemets: " << vect.size( ) << endl;
	cout << "address of v[0]: " << &vect[0] << endl;
}