Croatian Open Competition in Informatics
COCI 2011/2012
Internet online contest series

As part of the COCI series, we are hosting an Internet online contest
with problems from the Croatian Olympiad in Informatics 2012.
The contest is primarily intended for high school contestants,
but is open to all interested!

This contest is used in Croatia to select members of the IOI team.
There will be 4 tasks and the contest will be 5 hours long.
It will be held on Saturday, April 28, starting at 14:00 (GMT/UTC).
Check out your local times at
You may use Pascal, C/C++ or Java as your programming language of choice.

The two relevant websites are: - information about the contest - contest system

We hope that you will join us or encourage your students to do so!

This is the sixth year in a row that we are hosting the COCI series. You
can find tasks (statements, test data and solutions) from the previous
four years at That is over 200 original tasks for
students to practice on!

Project Manager
Kresimir Malnar

Organization Manager for Croatian Computer Science Association
Ivo Separovic

The IOI Announcements mailing list.
See for more information.