Hello Codeforces,

Yesterday marked the end of the Turkish TST. While the official results haven't been announced yet, I believe I've qualified for the national team.

Over the years, I've solved thousands of problems across various platforms. However, I’m aware that unlike many other Olympiads in Informatics, the IOI includes heuristic, output-only, and many interactive problems. I’ve also heard that since 2016, the IOI has shifted from being primarily algorithm/technique-heavy to featuring more ad-hoc and logic-based problems. As someone still relatively inexperienced with actual IOI tasks, I can neither confirm nor deny these claims.

Right now, I’m trying to figure out the best way to make use of the few months ahead. I’d truly appreciate any recommendations on high-quality IOI preparation resources. My goal is for this blog to serve as a cornerstone for IOI preparation—a place that brings together everything related to the IOI, and the IOI only.

Thank you for your interest!