Roadmap

99 topics across 8 subjects, each phased Foundations → Core → Advanced so the difficulty ramps up gradually instead of jumping straight to World-Finals-level material. Pick a subject on the left — each topic explains what the technique is and why it matters for ICPC, with a link to a real reference to learn it from and a set of curated Codeforces practice problems. A topic auto-completes once you've solved every one of its practice problems; the handful of Contest Meta-Skills topics (process and mindset, not code) are the one exception and still get checked off by hand.