Hello Codeforces!
I previously shared a problem recommendation app, and now I've rebuilt it into a much more powerful service.
1. Precise and Fast Per-Tag Skill Analysis
While the previous app only used an ML model to recommend problems, CFRD computes per-tag ratings using Bayesian estimation. You can instantly see which tags — greedy, DP, math, graphs — are your strengths and weaknesses.
2. Weekly Marathon — Your Weekly Training Plan
No more wondering what to practice! CFRD automatically prepares 8 problems for you every week. Just run the Weekly Marathon!
3. Round Drills — Round-Level Recommendations for Real Improvement
Want to practice full rounds instead of individual problems? Round Drills classifies rounds into Comfort Zone — where you can build confidence — and Challenge — where you can push past your weaknesses, all based on your per-tag ratings.
4. Problem Picks — Target Your Weaknesses
Prefer solving individual problems? Problem Picks recommends problems to strengthen your weak tags and sharpen your strong ones.
Service: link
Any feedback is welcome. Thanks for trying it out!
