10 - compiles
5 - transcript included
10 - correctly handles argc and argv
5 - clear comments about each optimization 
20 - implements both fast and slow
  must have some optimizations - at least obvious things like
don't divide by everything up to n-1 and don't do even numbers above 2
5 - STYLE - other comments where appropriate (e.g. head of file, to clarify any tricky code), clear, meaningful variable names (I've been recommending camel case
such as numCorrect, etc), indentation/layout of code readable and regular

5 - timings file includes slow and fast timings for at least 3 numbers

20 - correct output, recommend automated testing with things like
2,3,4,5

20 - structure approporiate - doubly nested loops over numbers to test
and possible divisors




Extra credit possibilities (please record extra credit in a separate
column)
10 - really cool optimizations ( could be more than 10 potentially)
PLEASE ALSO TRY TO CHOSE 1-3 people's whose code and optimizations
are especially nice to get a prize :-)
10 - handles really large numbers
5 - nice evidence in the transcript to testing
? - other things that really stand out in what they did ( try to give positive feedback too :-))