#include <iostream>
#include <iterator>   //for ostream_iterator
#include <cstdlib>
#include <vector>
#include <algorithm>
using namespace std;

int main()
{
	const int a[] = {10, 10, 10, 20, 30, 30, 50};   //must be sorted
	const size_t n = sizeof a / sizeof a[0];

	const int *const p = upper_bound(a, a + n, a[0]);

	vector<int> v;
	copy(a, p, back_inserter(v));

	copy(v.begin(), v.end(), ostream_iterator<int>(cout, "\n"));
	return EXIT_SUCCESS;
}