#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;
}
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