Hello Codeforces!

The first round of BubbleCup 11 started! It will last until April 26th 14:00 CET. Create a team, collaborate and start solving problems early to increase your chance of qualifying for the Bubble Cup Finals. Before the Finals, there is a second round (on which depends whether you are invited to the BubbleCup Finals), and all teams from round 1 are invited. Exact date of the finals is 22nd September and it will be held in Belgrade, Serbia.

New Due to increase in Python popularity on programming competitions, including ACM, submissions in Python 2 and 3 are now also supported.

Official link of the competition: http://bubblecup.org/

Good luck and try to have some fun!