統計
Your submissions received 1 five star rating
Awarded to Roger Stafford on 09 Oct 2019
Publish your first submission
Awarded to Roger Stafford on 09 Oct 2019
Obtain 50 solvers for a problem you have created
Awarded to Roger Stafford on 02 Nov 2018
Contribute at least one answer each month for 24 consecutive months
Awarded to Roger Stafford on 20 Jul 2017
Answer 3 questions that were unanswered for more than 30 days
Awarded to Roger Stafford on 20 Jul 2017
100 of your answers have been accepted
Awarded to Roger Stafford on 20 Jul 2017
Provide your first answer ever to someone else's question
Awarded to Roger Stafford on 20 Jul 2017
Comment on a problem or solution
Awarded to Roger Stafford on 23 Feb 2012
Create a problem
Awarded to Roger Stafford on 02 Feb 2012
Be the first to solve a problem
Awarded to Roger Stafford on 25 Jan 2012
Solve a problem for the first time
Awarded to Roger Stafford on 25 Jan 2012
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