#include <boost/thread.hpp>
#include <boost/chrono.hpp>
#include <iostream>

using namespace boost;
using namespace std;

void mw(int tid) {
	cout << "hello from thread " << tid << endl;
	//while (true) {
		this_thread::sleep_for(boost::chrono::milliseconds(100));
		cout << "[" << tid << "]" << endl;
	//}
}

int main() {
	int count = 1;
	thread_group *tg = new thread_group();
	int n;
	cout << "n:";
	cin >>n;
	for (int i=0; i<n;i++,count++) {
		tg -> add_thread(new thread(mw, count));
	}
	tg->join_all();

	return 0;
}