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Earned on 28 Nov 2012 for solving Problem 1. Times 2 - START HERE.
Earned on 18 Dec 2012 for commenting on Solution 178688.
Like a problem or solution.
Create a problem.
Earned on 10 Jan 2013 for first solving Problem 1193. Insert zeros into vector.
Earned on 3 Oct 2015 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 12 Dec 2012 for solving all the problems in Tiles Challenge.
Earned on 2 Oct 2015 for solving all the problems in ASEE Challenge.
Earned on 14 Mar 2013 for solving all the problems in Cody Challenge.
Create 10 problems.
Earned on 3 Oct 2015 for solving 500 problems.
Solve all the problems in Modeling and Simulation Challenge problem group.
Earned on 13 Oct 2015 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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