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

Earned on 8 Oct 2013 for liking Problem 731. Given a window, how many subsets of a vector su....

Earned on 8 Oct 2013 for commenting on Solution 296696.

Earned on 8 Oct 2013 for creating Problem 1920. Find the position of first minimum value in an....

Solve all the problems in CUP Challenge problem group.

Earned on 8 Oct 2013 for first solving Problem 1920. Find the position of first minimum value in an....

Solve a problem with a best solution.

Earned on 2 Feb 2017 for having 50 or more solvers for Problem 1927. Find nth maximum.

Solve all the problems in Tiles Challenge problem group.

Solve all the problems in ASEE Challenge problem group.

Solve all the problems in Cody Challenge problem group.

Create 10 problems.

Solve 500 problems.

Solve all the problems in Modeling and Simulation Challenge problem group.

Solve all the problems in Magic Numbers problem group.

Must receive 25 total likes for the problems you created.

Solve all the problems in Indexing I problem group.

Must receive 10 likes for a solution you submitted.

Must receive 50 total likes for the solutions you submitted.

Must receive 10 likes for a problem you created.

Solve all the problems in Indexing II problem group.

Solve all the problems in R2016b Feature Challenge problem group.

Solve all the problems in Computation Geometry I problem group.

Solve all the problems in Divisible by x problem group.

Solve all the problems in Matrix Manipulation I problem group.

Solve all the problems in Strings I problem group.

Solve all the problems in Matrix Patterns problem group.

Solve all the problems in Card Games problem group.

Solve all the problems in Indexing III problem group.

Solve all the problems in Computational Geometry II problem group.