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# Abuse (as few) libraries (as possible)

We don't want to use too much libraries when playing challenges. Sometimes, libraries aren't used at all in some answers in C.

What if we want to shorten some code? Functions do the trick, specifically built-ins. [It's specified you don't have to apply the byte count from accessing libraries](https://codegolf.codidact.com/posts/282802/282803#answer-282803), and with this in our advantage, we can use libraries, but it's better if we use only 1 or a few.