struct TimerCheck {
    std::chrono::high_resolution_clock::time_point start;
    TimerCheck():
        start(std::chrono::high_resolution_clock::now())
    {};
    ~TimerCheck(){
        auto end = std::chrono::high_resolution_clock::now();
        auto diff =  std::chrono::duration_cast<std::chrono::milliseconds>(end-start).count();
        cout << diff << endl;
    };
};