Linux setup for Competitive Programming (with Geany)

I found this → videos useful, if someone is looking for installing a compiler, can follow!
I don’t use Geany, but it’s all about your comfort.

This → is a more useful video for testing and error detection
again not necessarily use the same, but get good ideas.
Try not to copy the same code but make your own, in the long run, it’s more useful.

If any doubts pls look at the comments.