The question asks you to check it's secure not to get in. So you make a judgment how many times you need to try and not get in to show its secure rather than actually crack the code. 30 mins I am afraid may indicate you didn't understand what you were supposed to be doing.Guys I'm doing NRF's Artic shores. How long do people attempt the last question because I am Struuggling. I got to the very last one twice but failed both times and idk if it's better to get to the end of it or just give up?