Obtain 50 solvers for a problem you have created
Awarded to Kevin on 24 Jul 2022
Publish your first submission
Awarded to Kevin on 09 Oct 2019
Create a problem
Awarded to Kevin on 10 Dec 2014
Solve all the problems in CUP Challenge
Awarded to Kevin on 10 Dec 2014
Like a problem or solution
Awarded to Kevin on 28 Nov 2014
Solve a problem for the first time
Awarded to Kevin on 28 Nov 2014
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