For what it&#x27;s worth, if you were interviewing for a security job and couldn&#x27;t solve the longest increasing subsequence problem within a minute, I would probably say &quot;no hire&quot;. All security folks I know can solve such problems in their sleep, and it seems really important for the job. Or at least you&#x27;d have to show your algorithmic skills in some other way, without relying on &quot;business&quot; rhetoric. Does that sound reasonable?