Are you addicted to coding and solving complex problems? Come to the 4th Annual BSC/UPC HPC Hackathon and test your problem solving skills. In this competition you will be asked to think elegant and efficient solutions for challenging problems. Time will be your most important enemy, as you struggle to solve as many problems as possible in a limited time. This year the hackathon will take place in teams of 2 or 3 persons, so partner up with your friends and be ready to work together! One more thing, this year all Hackathon attendees will have the opportunity to visit the Marenostrum 4 Supercomputer!