#include <iostream>
#include <time.h>
#include <thread>
#include <cmath>

using namespace std;
using namespace chrono;

int main()
{
    system_clock::time_point pocetak = system_clock::now();
    srand(time(NULL));
    cout << rand() % 1000 << endl;

    system_clock::time_point kraj = system_clock::now();
    duration<double> sec = kraj - pocetak;

    cout << "blaa " << sec.count() << " sekundi" << endl;

    return 0;
}