Exactly. I mean, it would take a fairly skeptical person to think that you submitted someone else's code but maybe they just weren't willing to take the risk.
Either way, I think you've nothing to lose by sending that mail/picking up the phone. Regardless of the doubts the interviewer may have in you post-interview they'll know that everybody is prone to a bad day every once in a while.
Either way, I think you've nothing to lose by sending that mail/picking up the phone. Regardless of the doubts the interviewer may have in you post-interview they'll know that everybody is prone to a bad day every once in a while.