Mattias

Solve all the problems in CUP Challenge

Awarded to Mattias on 04 Jan 2015

Like a problem or solution

Awarded to Mattias on 02 Jan 2015

Comment on a problem or solution

Awarded to Mattias on 01 Jan 2015

Solve a problem for the first time

Awarded to Mattias on 01 Jan 2015

Be the first to solve a problem

Awarded to Mattias on 03 Jan 2015

Create a problem

Awarded to Mattias on 03 Jan 2015

Obtain 50 solvers for a problem you have created

Awarded to Mattias on 15 Jul 2020