Our team of isaf27, Maksim1744 and me had prepared a contest for Petrozavodsk camp some time ago.

Contest link

We hoped to use this contest for some open competition, like opencup or universal cup, but it seems like it already became well known in China.

The difficulty of the contest is higher than average, and we hope that strong teams like USA1 and japan02 can enjoy it too (if they have spare time).

We thank

• pinely for supporting our efforts
• snarknews for his help in growing and improving ICPC community
• universal cup team for continuing these efforts
• MikeMirzayanov for an opportunity for self improvement for many people, by providing great platforms Codeforces and Polygon