Somebody's Alphametic Problem Solver
By user12607856 on Feb 14, 2008
After googling around some more, I found very similar code by Naoyuki Tamura. In fact that version is much nicer. Clean. Well written. Proper indentation and comments.
Hmm. Makes me wonder whether Prateek and Singh stole Mr. Tamura's code and passed it off as their own, in order to get a good grade in some CS class. If that's the case, then shame on you.