BrowserUK I say you go for it and send them perl programs that may be disallowed, ... Looking at the rules closely, you get 60 seconds for your program to produce as many answers as possible

We read the rules differently. My reading is that the code will be run under the bluemix environment; and automated. Thus

1. Any Perl code submitted would simply fail to run and be discarded.
2. The 60 seconds is a hard time limit.

   If your program fails to produce the required output* within that time; your program will be aborted and any results summarily discarded.

   I expect that the input file will be of fixed size and relatively small; so for all but the most ardent GP solution to problem 2, the run times for most correct solutions will be a matter of milliseconds.

*From the specificity of the output formatting requirements I suspect that the pass/fail criteria will be judged by a simple text compare of the actual output against the expected.

Given the lack of interest in this thread; I lost interest also.