#include <iostream>
#include <chrono>
#include <thread>
using namespace std;
 
int main() {
	auto a = std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::system_clock::now().time_since_epoch()).count();
	std::this_thread::sleep_for(std::chrono::milliseconds(500));
	auto b = std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::system_clock::now().time_since_epoch()).count();
	cout<<a<<' '<<b<<' '<<b-a;
	return 0;
}

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