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Solver +10

Earned on 4 Jun 2013 for solving Problem 1. Times 2 - START HERE.

Promoter +10

Earned on 19 Jun 2013 for liking Problem 32. Most nonzero elements in row.

Commenter +10

Earned on 8 Jul 2013 for commenting on Problem 381. Angle between two vectors.

Speed Demon +50

Earned on 2 Jul 2013 for first solving .

Leader +20

Earned on 11 Jul 2013 for submitting the best solution .

CUP Challenge Master +50

Earned on 26 Mar 2014 for solving all the problems in CUP Challenge.

Quiz Master +20

Earned on 27 Aug 2014 at 11:05 for having 50 or more solvers for Problem 1707. Negative matrix.

Tiles Challenge Master +50


Solve all the problems in Tiles Challenge problem group.

Cody Challenge Master +50


Solve all the problems in Cody Challenge problem group.

ASEE Challenge Master +50


Solve all the problems in ASEE Challenge problem group.

Puzzler +50

Earned on 22 Jul 2013 for creating 10 problems.

Scholar +50


Solve 500 problems.

Renowned +20


Must receive 10 likes for a solution you submitted.

Famous +20


Must receive 25 total likes for the problems you created.

Celebrity +20


Must receive 50 total likes for the solutions you submitted.

Likeable +20


Must receive 10 likes for a problem you created.