Thanks! There is some logic to filter out these kinds of submissions on the server, to avoid showing them to other players (the submitter will still see their scores, however, as in your screenshot).
Having said that, the current filtering mechanism is not perfect, so some determined player could certainly get their bogus scores to appear on those histograms (side question: if someone goes through that much trouble, should I be flattered?). I could add a heuristic that tests programs on random inputs to make sure they're similar to the fixed inputs.