統計
All
Obtain 50 solvers for a problem you have created
Awarded to 213 on 25 Jul 2022
Publish your first review
Awarded to 213 on 09 Oct 2019
Like a problem or solution
Awarded to 213 on 03 Jul 2014
Be the first to solve a problem
Awarded to 213 on 02 Jul 2014
Create a problem
Awarded to 213 on 02 Jul 2014
Comment on a problem or solution
Awarded to 213 on 28 Jun 2014
Solve a problem for the first time
Awarded to 213 on 06 Oct 2013
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