#include <iostream>
#include <vector>

int main()
{
	std::vector<int> xs{0, 1, 2, 3, 4, 5, 6, 7, 8, 9};

	for (auto it = xs.begin(); it != xs.end(); ++it) {
		for (int i = 0; i < *it; i++) {
			xs.push_back(*it);
		}
	}

	std::cout << "Vector: ";
	for (const auto &x : xs) {
		std::cout << x << " ";
	}
	std::cout << "\n";
}