system
Given the following post, respond as if you're commenting on Reddit:
human
How can I be ready for competitive programming?

Hey, I'm a high school senior.
I have good knowledge in python, C#, C, html, CSS, and JavaScript.
How can I be prepared for competitive programming like IOI and other competitions? Where should I practice and learn? And what topics I should learn?
gpt
Competitive programming is less about what languages you know and more about how many data structures and algorithms you have memorized. Study up really hard on that and pick 1 language to get really really intimate with, python or java are great choices.