CSES Problem Set
The CSES Problem Set contains a collection of algorithm programming practice problems. You can access the problems here.
Datatähti-valmennus
Kokoelma harjoitustehtäviä, joiden avulla voit harjoitella Datatähteä ja muita kilpailuja varten. Pääset tehtäviin tästä.
CSES Blog
CSES for Teachers
Using this new feature, teachers can create their own courses and track their students' progress.
BOI Contest Collection
This collection contains all Baltic Olympiad in Informatics contests from 2005 to 2021. You can access the contests here.
CEOI Contest Collection
This collection contains all Central European Olympiad in Informatics contests from 2005 to 2021. You can access the contests here.