// create threads here
    hT[0] = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)T1, 0, CREATE_SUSPENDED, &t_id1);
    hT[1] = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)T2, 0, CREATE_SUSPENDED, &t_id2);
    hT[2] = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)T3, 0, CREATE_SUSPENDED, &t_id3);
    // create semaphores here
    //= CreateSemaphore(NULL, 0, 3, NULL);
    sm[0] = CreateSemaphore(NULL, 0, 3, NULL);
    sm[1] = CreateSemaphore(NULL, 0, 3, NULL);
    sm[2] = CreateSemaphore(NULL, 0, 3, NULL);


void T1(void)
{
    cout << "T1 STARTED" << endl;
    Sleep(1000);
    ReleaseSemaphore(sm[0], 3, NULL);
    WaitForMultipleObjects(3, sm, TRUE, INFINITE);
    cout << "T1 FINISHED" << endl;
}

void T2(void)
{
    cout << "T2 STARTED" << endl;
    Sleep(2000);
    ReleaseSemaphore(sm[1], 3, NULL);
    WaitForMultipleObjects(3, sm, TRUE, INFINITE);
    cout << "T2 FINISHED" << endl;
}

void T3(void)
{
    cout << "T3 STARTED" << endl;
    Sleep(3000);
    ReleaseSemaphore(sm[2], 3, NULL);
    WaitForMultipleObjects(3, sm, TRUE, INFINITE);
    cout << "T3 FINISHED" << endl;
}