統計
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Obtain 50 solvers for a problem you have created
Awarded to Joseph Pauwels on 08 Oct 2018
Accept 1 answer given by other contributors
Awarded to Joseph Pauwels on 20 Jul 2017
Create a problem
Awarded to Joseph Pauwels on 10 May 2014
Comment on a problem or solution
Awarded to Joseph Pauwels on 10 May 2014
Like a problem or solution
Awarded to Joseph Pauwels on 10 May 2014
Solve a problem for the first time
Awarded to Joseph Pauwels on 09 May 2014
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