On 2008/01/30, at 21:57, Kuba Ober wrote:
> I guess the contest designers have to decide one way or the other  
> on the "it
> must be a correct program" constraint.

The only constraint for correctness is 'to be accepted by the server'.
The contest server automatically and immediately judges submitted  
programs
whether it is correct or not. If the submission is correct, the  
server will
add the author's name to the ranking.

The error message approach, even if it is palindromic, will be rejected
because the server does not observe the standard error.

Cheers,
Keisuke.