#include <vector>

#include <utility>

#include <iterator>

using namespace std;



void main()

{

	vector<int> v(20);

	

	iterator_traits<vector<int>::iterator>::value_type value = v[0];

	iterator_traits<vector<int>::iterator>::distance_type diff = v.end() - v.begin();



	int i = 20;

	int* iPtr = &i;



	iterator_traits<iPtr>::value_type simple_value = *iPtr;

}