#include <iostream>
#include <chrono>
#include <ratio>
using namespace std;
using namespace std::chrono;

int main() {

	microseconds mms ( 12345 );
	milliseconds ms ( 123 );
	seconds s (10);
	minutes m (30);
	hours h (34);

	seconds sec = hours(2)+minutes(65)+seconds(9);
	hours hr = duration_cast<hours>(hours(2)+minutes(65)+seconds(9));
	
	std::cout << "sec = " << sec.count() << ", hr = " << hr.count() << std::endl;

	return 0;
}