Earned on 11 Feb 2012 for solving Problem 167. Pizza!.
Earned on 10 Jul 2012 for commenting on Problem 820. Eliminate unnecessary polygon vertices.
Earned on 28 Feb 2012 for liking Solution 21249.
Earned on 17 Jul 2012 for creating Problem 839. Compute the dilation of a binary image.
Solve a problem first.
Solve all the problems in CUP Challenge problem group.
Earned on 20 Nov 2012 for submitting the best solution Solution 112818.
Must have 50 solvers for a problem you created.
Solve all the problems in Tiles Challenge problem group.
Solve all the problems in ASEE Challenge problem group.
Solve all the problems in Cody Challenge problem group.
Create 10 problems.
Solve 500 problems.
Solve all the problems in Modeling and Simulation Challenge problem group.
Solve all the problems in Magic Numbers problem group.
Must receive 25 total likes for the problems you created.
Must receive 50 total likes for the solutions you submitted.
Must receive 10 likes for a solution you submitted.
Must receive 10 likes for a problem you created.
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