Run 1: Execution error: Your program did not produce an answer
that was judged as correct. The program stopped at 0.011 seconds;
it used 2220 KB of memory. Your answer length was 0; the correct
length is 5.

Here are the respective outputs:
----- our output ---------
GREG
---- your output ---------
--------------------------

Your program created an empty file.

------ Data for Run 1 [length=5 bytes] ------
4734
----------------------------