The main program

Kernel *kernel = new Kernel;

main() {

    Office  *superviser_office = new Office(new Uniform(2,4, new MLCG));
    Door    *in                = new Door(20,new Uniform(1,2, new MLCG));
    Counter *counter           = new Counter(new Uniform(1,2, new MLCG));
    Cashier *cashier           = new Cashier(superviser_office,new Uniform(0,1, new MLCG));
    Door   *out                = new Door(20,new Uniform(1,2, new MLCG));
    Main_Source source(new Uniform(0,0.5, new MLCG), in, out,
                            counter,cashier);
    
    kernel->set_max_simulation_time(50000000);
    kernel->run();
}