Legends of code is a contest. Experts from D2SI (Paris - FRANCE) mobilized themself to build an hackathon for students who are in last year engineering school or university. This contest is made in duo. The topic of the contest is discovered the D-Day. The goal is to develop in 11 hours and in real conditions an algorithm which is taking in account some criterias related to agility and eco-designing. The quality of the code, the scalability and ergonomics are taken in account for the assessment. Authorized programming languages are Java, C++ and C#. The concept of the contest is ‘Bring your own device’ so each participant agrees in bringing his own laptop and his own IDE. For best € 4,000 to be won.