#include <iostream>
#include <chrono>

int main() {
    // Use system_clock to ensure epoch alignment with 1970-01-01
    auto now = std::chrono::system_clock::now();
    
    // Cast the duration to nanoseconds and retrieve the count
    auto now_ns = std::chrono::duration_cast<std::chrono::nanoseconds>(
        now.time_since_epoch()
    );
    
    std::cout << "Nanoseconds since epoch: " << now_ns.count() << std::endl;
    return 0;
}