Alfa Battle — as it was, record of conference and the list of tasks

At the beginning of June we started Alfa Battle for Java-developers. Came to tell time about how everything passed, to share useful videos from speakers of the Koding Future strim-conference (JOINT-STOCK COMPANY "ALFA-BANK", Beeline, X5 Retail Group) and to show our tasks. By the way, about tasks. Whether we overdid and overestimated possible participants, whether weather was so-so, generally, from 1498 participants from 50 cities all tasks (5 pieces) were not solved entirely by anybody. Therefore under a cat you will find all tasks with the description and if it wants to work out them, will be able to make it without any deadlines. Those who will master, with pleasure...