#include <iostream>
#include <boost/thread.hpp>
#include <boost/chrono.hpp>
using namespace std;
using namespace boost;

void mw(int tid){
	cout <<"hello from thread["<<tid<<"]"<<endl;
//	while(true){
		this_thread::sleep_for(boost::chrono::milliseconds(10500));//100
//		cout<<"["<<tid<<"]"<<endl;
//	}
}

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


return 0;
}