#include <iostream>
#include <cstdlib>
#include <vector>
using namespace std;

int main()
{
	const int a[] = {10, 20, 30};
	const size_t n = sizeof a / sizeof a[0];
	vector<int> v(a, a + n);

	for (vector<int>::const_reverse_iterator it = v.rbegin();
		it != v.rend(); ++it) {
		cout << *it << "\n";
	}

	return EXIT_SUCCESS;
}