Hi! I’m Roger!
I’ve used many handles online, but they typically follow the regex /kirito[\._]?feng/.

I am currently a Master’s student at the University of Waterloo, in the Combinatorics and Optimization department. My main interest is in matroid theory.

I am also an admin and developer for DMOJ: Modern Online Judge, Canada’s largest online judge for computer science contests. I have stepped back somewhat from my role to focus on school; should you have questions, please direct them towards the other admins.

An outdated copy of my résumé is available here. I plan to update it, along with the rest of my website, some time before the heat death of the universe.