Today we have released a new version of the CSES Problem Set:
CSES Problem Set is a collection of algorithmic programming problems that can be used to practice competitive programming. We have now added 100 new problems, and the total number of problems is 300. There are both easy and difficult new problems, and some of them cover advanced topics, such as treaps, suffix structures, and FFT.
In 2020, there were more than one million submissions to CSES, which is a new record. Thank you for your submissions and new test cases through hacking!
Our ultimate goal is to create a problem set of 1000 problems, so you can expect many new problems also in the future. If you have ideas on how to improve the problem set, you can discuss them here.