One recommendation I'd make, is to reveal all problems at the very beginning. I logged in, saw that the first problem was nothing to do with distributed comput

One recommendation I'd make, is to reveal all problems at the very beginning. I logged in, saw that the first problem was nothing to do with distributed computing. Also realised it would take me longer to submit the code than it had taken to work out the answer... then I quit and didn't look back. It's a shame, because levels 2 & 4 possibly look quite interesting, I might have persevered if I'd known. Sadly, limited time on my hands means I dismissed it too quickly!