The DMOJ is a modern contest platform and archive of programming problems. It's also entirely open source.
So far, 184615 developers have submitted to 5046 problems a total of 6803991 times, using 70 languages.
If this is your first visit, please register an account. Then, try the Hello, World! problem.
Hello everyone!
The Arcadia High School Coding Club is excited to announce the first ever Arcadia Computing Contest! There will be 5 questions, with one and a half hours to solve them. The contest will start on November 13th at 6:30pm EST and will be open for a week.
The contest will be unrated. For more details, check out the contest page.
Good luck and we hope you enjoy the problems!
Hi everyone!
This Thursday, we'll be hosting the second OTHS Coding Competition!
The contest will be unrated. For more details, check out the contest page.
Have fun!
All problems from day 1 and day 2 of IOI have been added. You may access them here.
An unofficial mirror for day 1 and day 2 of the contest has been set up.
Finally, we wish to congratulate team Canada for their amazing performance at IOI!
Hi everyone!
As we gear up for another exciting school year, what better way to kick things off than with a DMOJ contest? With that, we present the Back to School '24 contest!
The contest will take place from Saturday, August 31st to Sunday, September 8th. Participants will have a 3-hour window to complete 6 problems.
The contest is rated for all users with a rating less than 2400.
For more information, please visit the contest page.
Good luck and have fun!
Hi everyone,
We are proud to present the 2024 Spring Coding Bowl: a 2-hour, 5-problem competition open to all high school students. The contest will run from April 26th 00:00 EDT to April 29th 00:00 EDT (Eastern Daylight Time), and the problems will range in difficulty from beginner to intermediate.
To register, please join the Spring Coding Bowl organization here. You must register to participate. The contest will be hosted here on DMOJ. Please ensure that you register before April 26th.
An official honour roll will be published on the contest page, the top scorers will be named as "Coders of the Year", and schools will be ranked by the sum of the three highest scores from each school. As such, please be sure to tell other students in your school to participate (perhaps get your school's coding club involved)!
If you would like to prepare, you can try to solve last year's problems here on DMOJ.
Finally, this year we are also offering cash prizes and an opportunity to enter a raffle for all eligible high school students! Please check the contest page for more details.
Good luck to all participants!
UCC Coding and Algorithms Academy
Hi everyone!
Welcome to the first iteration of dnialh's CTF Contest. What does CTF stand for? You'll have to wait to find out.
The contest is unrated and will run from Sunday March 31st at noon EST to Sunday April 7th (including Monday April 1st). There is no contest window (problems will be open for the full window).
There is also a $60 prize pool. For more details see the contest page.
Have fun!
Hi everyone!
This Saturday, we'll be hosting the first University Hill Coding Competition! There will be 5 questions and you will have 3 hours to solve them.
The contest will be unrated. For more details, check out the contest page.
Have fun!
Hi everyone!
From Friday, February 16th to Monday, February 19th, we'll be hosting The Contest Contest 1. Participants will have a 3-hour window to solve 6 problems.
Note that this contest is rated for all participants.
More details can be found on the contest page.
We hope you enjoy the problems and have fun!
Hi everyone!
This thursday, we'll be hosting the first OTHS Coding Competition! The format of this contest will be the same as the CCC.
The contest will be unrated. For more details, check out the contest page.
Have fun!
Hi everyone!
Yet another time, this is yet another sentence in yet another message in yet another blog post with yet another announcement that there is yet another opportunity for yet another Yet Another Contest!
The contest will run from Friday, February 2nd to Thursday, February 8th. Participants will have a 3-hour window to complete 6 problems.
Note that the contest is not rated for users with at least 3000 rating.
Good luck and have fun!