int main(int argc, char **argv) {
    bool quit = false;

    do {
        int menu;

        printHelp();
        cin >> menu;

        switch (menu) {
            case 1:
                {
                    algorytm1();
                    break;
                }


            case 2:
                {
                    algorytm2();
                    break;
                }

            case 3:
                {
                    quit = true;
                    break;
                }

            default:
                {
                    printHelp();
                    break;
                }
        }
    } while (! quit);
}