#include <chrono>
#include <thread>

#include "fmt/std.h"

auto main(int argc, char const* argv[]) -> int {
    using namespace std::chrono;
    using namespace std::literals;

    auto start = steady_clock::now();

    while (true) {
        auto elapsed = steady_clock::now() - start;
        auto totalSec = duration_cast<seconds>(elapsed).count();
        auto h = totalSec / 3600;
        auto m = (totalSec % 3600) / 60;
        auto s = totalSec % 60;
        auto ms = duration_cast<milliseconds>(elapsed % 1s).count();

        fmt::print("\033[32m{:02}:{:02}:{:02}\033[0m.\033[90m{:03}\033[0m\r",
                   h, m, s, ms);

        std::this_thread::sleep_for(10ms);
    }

    return 0;
}