On June 1st we hold our XI Annual programming contest; this is the first time that we use Codeforces for this contest and we want to add it to the Codeforces Gym to make it available to everybody. The gym contest takes place on Saturday, June 8, at 09:00 CDT.
The contest is supposed to be in teams, but it is ok if you want to use it for personal training too. For this contest we had participants from university and high school, but we hope it will be interesting for everybody.
We hope you enjoy the problems and if you have feedback about this contest, we will be glad to hear about it.
Update: Solutions for problems are available on Github.
Update 2: Editorial is available through this link.