#include <chrono>
#include <iostream>
int main()
{
auto now = std::chrono::high_resolution_clock::now();
typedef std::chrono::high_resolution_clock::period period_t;
auto dur = now.time_since_epoch();
std::cout << "High-res clock reports " << dur.count() << " ticks of 1/" << period_t::den << " seconds \n";
}
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