Hello Codeforces Community,

I've spent a significant amount of time on this platform and have learned quite a lot of things. Sometimes, I feel a strong desire to give back to the community by creating a problem for a contest or testing a contest. However, I'm unsure how to get started with these activities.

Can someone guide me on how I can contribute by creating a problem or testing a contest? If any of you have experience in these areas, I'd love to hear about your journey and what it was like for you.

Thank you!