Earned on 1 Dec 2012 for solving Problem 2. Make the vector [1 2 3 4 5 6 7 8 9 10].
Earned on 30 Nov 2012 for commenting on Solution 170884.
Earned on 1 Feb 2014 for liking Solution 71603.
Create a problem.
Solve a problem first.
Earned on 16 Dec 2013 for solving all the problems in CUP Challenge.
Solve a problem with a best solution.
Must have 50 solvers for a problem you created.
Earned on 21 Jan 2014 for solving all the problems in Tiles Challenge.
Earned on 9 Nov 2013 for solving all the problems in ASEE Challenge.
Solve all the problems in Cody Challenge problem group.
Create 10 problems.
Earned on 16 Dec 2013 for solving 500 problems.
Solve all the problems in Modeling and Simulation Challenge problem group.
Earned on 5 Mar 2016 for solving all the problems in Magic Numbers.
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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