#include <iostream>
#include <thread>
#include  <future>
using namespace std;
 
int main() {
	// your code goes here
 
 
	std::promise<int> promise_that_data_is_loaded;
	auto loaded_future = promise_that_data_is_loaded.get_future();
	std::thread t([&promise_that_data_is_loaded]()
	{
		int i =0;
	    while (i < 100)
	    {
	    	++i;
	    }
    	promise_that_data_is_loaded.set_value(i); //set this after work is done
	});
	long long int  tm = 0;
	while(loaded_future.wait_for(std::chrono::seconds(1)) != std::future_status::ready)
	{
	    tm++;
	}
	cout << tm <<endl;
	loaded_future.get();
	t.join();
	return 0;
}

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