Ye Cheng

Obtain 50 solvers for a problem you have created

Awarded to Ye Cheng on 07 Nov 2013

Solve a problem for the first time

Awarded to Ye Cheng on 09 Feb 2012

Create a problem

Awarded to Ye Cheng on 25 Apr 2013

Publish your first submission

Awarded to Ye Cheng on 09 Oct 2019

Your submissions received 25 five star ratings

Awarded to Ye Cheng on 09 Oct 2019

Publish your first review

Awarded to Ye Cheng on 09 Oct 2019

Your submission is selected as "Pick of The Week"

Awarded to Ye Cheng on 09 Oct 2019

Your submissions were downloaded 250 or more times in a month

Awarded to Ye Cheng on 01 Nov 2019