Croatian Open Competition in Informatics

Croatian Open Competition in Informatics
COCI 2016/2017
Internet online contest series

Over the next six months we will organize eight online contests
as a warm-up for the 2017 season of high school programming competitions.
Everyone is welcome to participate!

Each contest will be three hours long and will feature six tasks.
The tasks will be of widely varying difficulty; we hope that many
beginner or up-and-coming contestants will participate, as well as
the more experienced ones.

The first contest will be held on Saturday, 15 October 2016, starting
at 14:00 (GMT/UTC). Check out your local times at

You may use Python, 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 eleventh year in a row that we are hosting the COCI series. You
can find the tasks (statements, test data and solutions) from the previous
ten years at There are ove 400 original tasks for
students to practice on!

Project Manager
Kresimir Malnar
Croatian Computer Science Association