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

int main()
{
	using vecint = vector<int>; //from now on, vecint means vector<int>
	vecint v {10, 20, 30};

	for (auto val: v) {
		cout << val << "\n";
	}

	return EXIT_SUCCESS;
}