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Solve all the problems in CUP Challenge problem group.
Earned on 17 Jan 2013 for creating 10 problems.
Earned on 28 Nov 2012 for solving 500 problems.
Must receive 10 likes for a solution you submitted.
Must receive 25 total likes for the problems you created.
Earned on 12 Feb 2013 for receiving 50 total likes for solutions.
Must receive 10 likes for a problem you created.