Winners of the olympiad.

Konstantin Khadaev (87 points) - First Prize.

Crzegorz Adamski, Adam Mickiewicz University (67 points) - Second Prize.

Robert Kwiecinski, Adam Mickiewicz University (64 points) - Second Prize.

Chengyang Qian, Shanghai Jiao Tong University (46 points) - Third Prize.

Oleg Gritsenko (42 points) - Third Prize.

Here are the problems and rules of the contest in English, in Spanish (thank you, Leonardo!) and in Russian.