The Massachusetts Computer Science Olympiad is a high-school
programming competition hosted by the leaders of Brookline Computer
Science Initiative. Our goal is to provide Massachusetts CS students
with hands-on experience and opportunities to build a network of
fellow coders through an in-person coding competition
MACSO '24
Check out some highlights from our last competition!
In-Person HS Finals Results
Award |
Full Name |
School |
1 |
Mark Zhou |
George School, PA |
2 |
Artur Gilfanov |
Fairview High School, CO |
3 |
Yancheng Zhao |
Buckingham Browne & Nichols School, MA |
HM |
Zachary Rogers |
Brookline High School, MA |
HM |
Leran Tao |
Newton North High School, MA |
HM |
Milo Chourmet |
Roxbury Latin School, MA |
HM |
Austin Liu |
Belmont High School, MA |
Online Open Finals Results
Award |
Full Name |
School |
1 |
Jaehyun Koo |
Massachusetts Institute of Technology, MA |
2 |
Julian Wu |
Westview High School, CA |
3 |
Yu Zheyuan |
NUS High School of Math and Science, Singapore |
FAQ
Contact [email protected] for any
questions.
Who can participate in the competition?
The competition is open to high school students of all programming
backgrounds. Whether you are a beginner or an advanced coder, you are
welcome to participate! After you get your code forces username
verified you can start the competition
How does the competition work?
The competition has two parts: an online qualification stage (Summer
2025) and in-person finals (separate online finals for those who can't
make it). The qualification stage consists of three coding problems
with no time limit (tie breakers decided from amount of time used),
and the top 50 qualify for the finals.
What is the scoring system like?
Qualification: IOI system. Each problem is either graded either by
groups or by each test individually. Finals: ICPC system. each problem
is either solved or not. The time penalty serves as tie breaker
When and where is the competition?
The competition will be held at the Brookline Teen Center Summer 2025.
The in-person competition lasts three hours and includes free pizza,
prizes (Amazon giftcards), and activities.
How can I register for the competition?
You can register for the competition by clicking on the
Register Here
button at the top of the page. It will take you to the registration
form where you can fill in your details.
Can I participate if I’m not in Massachusetts?
Yes, online participants who can’t make it in person can qualify for
the online finals!
Our Sponsors
A huge thanks to our sponsors. Without their support, MACSO wouldn't
be possible.
Brookline Teen Center
Russian School of Mathematics
KTBYTE
Wolfram
JetBrains
Data Intensity
Brookline High School
Hack Club
Art of Problem Solving
Algoverse
Partner Competitions
Here are our partner competitions. We strongly recommend to try their
competitions as well!
Lexington Informatics Tournament
American Computer Science League
Lunar
Resources
To learn the algorithms and data structures for MACSO, you can use
websites like
USACO Guide or
Algorithms for Competitive Programming.