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Hello, World!

Welcome to the PEG Online Judge. This site was created by members of Woburn Collegiate Institute's Programming Enrichment Group as a resource for competitive programmers everywhere. We also run PEGWiki, a site for information and tutorials of algorithms.

Currently, we have 1017 problems, 252302 submissions, 277 analyses, and support for 15 languages.

If you are new here, register an account and get familiar with the judge by solving A plus B. Alternatively, you can try a random problem that you haven't solved.


Announcements (See All)

The PEG Judge has switched to a more secure password hashing scheme. From now on, your passwords will be hashed securely using bcrypt.

Within the next 30 days, if you log in or change your password, the new password hash will be activated for your account. Please note that we cannot generate the new password hashes without you entering your password on the site, because the old passwords are still hashed (and not stored in cleartext).

In 30 days from now, the old, less secure hashes will be deleted from the database. If you do not log in or change your password within 30 days of this announcement, you will not be able to log in and will need to use the forgotten password feature in order to reset your password.

CCO 2015 Problems Added

by Alex on Jun 05, 2015 - 11:08:55 pm UTC

Suggest some tags!

by jargon on May 02, 2015 - 3:42:13 am UTC
Better problem tagging infrastructure is on its way, and we need help figuring out which tags would be useful!

Please reply to this post with suggestions.

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