I suspect you're going OOM - the runner restricts the amount of memory used to ~500MB or so. Scala is plenty fast for this, it's not necessary to rewrite the g

I suspect you're going OOM - the runner restricts the amount of memory used to ~500MB or so. Scala is plenty fast for this, it's not necessary to rewrite the given solution. It's possible to get a passing score with ~5 lines of code changed (but finding the right lines to change is the hard part :) ).