Fortinet Software Engineer interview questions

failed as there are 2 algo question can not be resolved... my mainly time cost at air invader problem, the time is limit, there are 12 questions total, 8 selection, 4 algo coding

1st round was a programming test. Then, it was followed by recruiter's screening. Next, it was by their hiring manager. After this, there was supposed to be a decision within a day or 2 to go onto the next round of interviews by the hiring team or not. But they didn't contact me back punctually as promised. Thus, their interview process wasn't too well coordinated.