統計
Accept 1 answer given by other contributors
Awarded to andrea84 on 20 Jul 2017
Provide your first answer ever to someone else's question
Awarded to andrea84 on 20 Jul 2017
Obtain 50 solvers for a problem you have created
Awarded to andrea84 on 28 Mar 2017
Solve all the problems in CUP Challenge
Awarded to andrea84 on 04 Feb 2014
Solve 500 problems
Awarded to andrea84 on 07 Jun 2013
Solve all the problems in ASEE Challenge
Awarded to andrea84 on 04 Jun 2013
Solve all the problems in Tiles Challenge
Awarded to andrea84 on 16 May 2013
Be the first to solve a problem
Awarded to andrea84 on 25 Mar 2013
Create a problem
Awarded to andrea84 on 25 Mar 2013
Comment on a problem or solution
Awarded to andrea84 on 22 Feb 2013
Like a problem or solution
Awarded to andrea84 on 18 Feb 2013
Solve a problem for the first time
Awarded to andrea84 on 18 Feb 2013
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