Welcome to the Math Contest Repository

So far, 348 mathematicians have submitted 4477 solutions to 1421 math problems.

The MCR is supported by:

Recent Announcements

• Happy Birthday, MCR!

  published by savir 2024-10-18.

  To celebrate our one-year anniversary, we’re excited to offer a 20% discount on all premium memberships! This offer is valid until October 20.
  Don’t miss out on this opportunity to enhance your math practice and join our vibrant community!
  For more details about our journey over the past year, check out my letter: Read the Anniversary Letter.
  Thank you for being part of the Math Contest Repository! Happy solving!

• Cheating on the MCR

  published by savir 2024-09-12.

  Hi all,
  I regret that I must address this matter, however cheating has become very prevalent on the MCR. We have had cases where users use scripts or bots to answer questions, and even users cheating on rated contests. The most recent offense was committed by a participant with the handle "nickname", who engaged in cheating both during the "Challenge for the Weak 1" contest and subsequently fraudulently achieved a 1st place ranking. I would like to remind everyone that such misconduct is dealt with harshly, and penalties include:
  i) being permanently banned from the MCR service
  ii) a public announcement regarding your misconduct
  iii) repeated offences may result in our admins contacting you or your institution
  Please be reminded that the MCR operates as a not-for-profit mathematics community. Disregarding its principles is equivalent to showing disregard for the value of free education. Additionally, you are diminishing the experience of your peers who are diligently working to achieve a high ranking.

• Using the MCR for a Club or Organization

  published by savir 2024-07-09.

  We've recently received several requests from tutors and organizations for an instance or "clone" of the MCR for their business. While our platform is not open source (and thus we can't provide traditional clones), we have two solutions for this.
  - You can request for an MCR organization to be created for your club or company at just \$10/month (\$100/year). You will be able to host your own problems on our database, and they will only be visible to your students. You can also create special examinations and homework that only your students can see.
  - You can request for an API key for \$5/month (\$50/year) which allows you to use problems from our collection and check answers in real-time. Programming experience is required, of course, to create a private platform based on this.
  
  Please email mathcontestrepository@gmail.com or ping @savir on any MCR community to get started with one of these options! (More API information will be added to this announcement as it rolls out)

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This platform allows you to access, submit answers to, and view solutions for past math contests, olympiads, and curriculum problems. We also host some of our own contests once in a while to prepare you for the real deal! While this site is intended for high school and/or undergrad students, others may also find it useful for preparing!

Want to track how much you've progressed? Our smart skill level indicator tells you exactly how good you are at math right now.

The Math Contest Repository grades solutions based on MCRX 3.4, the world's most advanced online contest grading technology. We use algorithms that feature support for both offline grading and adaptive index grading.