Confluence Competition

Problems (COPS)


Problem sets used in the competition stem from COPS, a database of confluence problems. Each problem has a unique and persistent number so that you can refer to the problems by e.g. "COPS ♯100". Each problem is equipped with tags, and problems can be queried using a combination of these tags.


Each problem has one of the following formats. Follow the link to check the details.


Submissions of new problems are welcome. For submission, please use the web interface. Problems should follow one of the formats above. Alternatively, you can send problem files in these formats to the steering committee.


Every problem belongs to one of four families.