/*
 * Copyright (c) JoinQuant Development Team
 * Author: Huayong Kuang <kuanghuayong@joinquant.com>
 */

#include <iostream>
#include <unordered_set>

using namespace std;

int main(void)
{
 unordered_set<string> uset{ "a1", "a2", "a3" };
	uset.insert("b1");
	uset.insert("b2");

	cout << "uset: ";
	for (auto it = uset.begin(); it != uset.end(); ++it) {
		cout << *it << " ";
	}
	cout << endl;

 return 0;
}