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Practical guides

Is Kattis Suitable for Beginners and How Do You Start?

Yes. Kattis is suitable for beginners, and the site itself says so: the problem archive welcomes new users and tells them to "just register and start…

How Does the Kattis Ranklist and Scoring Work?

Kattis ranks users by total score: the more points you accumulate from solved problems, the higher you appear on the ranklist. The site publishes thr…

How Are Problems Organized by Difficulty on Kattis?

Kattis groups problems into four named difficulty bands — Trivial, Easy, Medium, and Hard — and assigns each problem a numeric point value that incre…

What is Kattis (open.kattis.com)?

Kattis is an online programming problem archive where you can find thousands of programming problems to solve. If you're new, you register an account…