About
Hi. I’m CJ. The thing I like to do most is write. I strive to write clear handouts, usable websites, and honest blog posts.
My full name’s Carl Joshua Quines, but you can call me CJ. I’m twenty-one, and I’m a incoming senior at the Massachusetts Institute of Technology.
Here’s my resume, some frequently asked questions, and contact details.

Math
I write handouts on math I find interesting. My emphasis is on explaining things clearly and giving intuition, and most of my handouts have pretty light prerequisite knowledge.
I’ve done a little bit of math research from PROMYS, MIT PRIMES, and elsewhere. I’ve coauthored four papers on the arXiv, and they’ve all been on graph theory.
Code
I enjoy programming a bunch of miscellaneous projects. A lot of my work is web development, with a focus on the front-end. I believe good websites should be easy to use, quick to load, and nice to look at.
I’m involved with competitive programming. Back when I joined contests more often, I went to the International Olympiad in Informatics, and made it to Round 3 of Google Code Jam. Now, most of my work is in organizing the National Olympiad in Informatics – Philippines, writing problems and training material.
Other things
Writing is one of my hobbies. I’m a blogger for the MIT Admissions blogs, where I publish posts on student life around once a week. I collect my favorite posts on my writing page.
I’m in a lot of MIT student groups. Right now, I’m doing a lot of work with the MIT Educational Studies Program; we run educational events for middle and high school students around Boston. I do square dancing and round dancing with Tech Squares, and I’m the president of the Filipino Student Association and the Assassin’s Guild.
I do puzzlehunts with Floor Pi, my living group in East Campus, and sometimes with the ✈✈✈ Galactic Trendsetters ✈✈✈. I help write the Galactic Puzzle Hunt.
On this website, there’s a FAQ, with questions mostly about studying in the US, and math and programming competitions. I care about design enough to have a colophon.
If you have a question, found a typo, or just want to talk, you should contact me. I read and reply to all emails I get, and I always like it when I get an appreciation message from someone.