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Arcadia Computing Contest 2

kevlu8 posted on March 16, 2025, 4:34 a.m. 0
AHSCC2 Banner

Hello everyone!

The Arcadia High School Coding Club is excited to announce the second edition of the Arcadia Computing Contest! There will be 6 questions, with two hours to solve them. The contest will start on March 19th at 18:15 EDT and will be open for a week.

The contest will be rated for users with a rating under 1900. For more details, check out the contest page.

Good luck and we hope you enjoy the problems!

Dilhan's Computing Contest 1

dnialh_ posted on Feb. 17, 2025, 1:55 a.m. 0

Greetings all!

I am pleased to announce my first (rated) DMOJ contest!

The contest will begin on February 18th, 2025 00:00 ET and will last one week. Participants will have a 3-hour window to solve 6 problems.

The contest is rated for all participants.

For more information, please visit the contest page.

Good luck, and have fun!

OTHS Coding Competition 3 (Mock CCC)

Ivan_Li, Humanthe2nd posted on Feb. 11, 2025, 3:48 p.m. 0

OTHS Banner

Hi everyone!

This Thursday, we'll be hosting the third 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!

Dr. Anne Anderson Coding Contest

sugo posted on Feb. 10, 2025, 8:27 p.m. 0

Hi everyone!

The Dr. Anne Anderson High School Coding Club is proud to announce the first ever Dr. Anne Anderson Coding Contest!

It will take place from February 11th at 17:10 EST to February 18th at 00:00 EST. Participants will have a 2-hour window to complete 6 problems.

The contest will be rated for participants with a rating under 1800. For more info, take a look at the contest page.

Good luck and have fun!

Yet Another Contest 9

Josh, andrewtam posted on Jan. 6, 2025, 5:42 p.m. 0

YAC Banner

Hi everyone!

Yet another time, this is yet another sentence in yet another paragraph 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, January 10th to Monday, January 20th. Participants will have a 3-hour window to complete 6 problems.

Note that the contest is not rated for users with at least 2800 rating.

Good luck and have fun!

UTS Open '24 Contest

tofu, sonje, andyloo666, Sucram314, goofygoober posted on Dec. 30, 2024, 6:15 a.m. 0

Hey everybody!

UTS is back just in time for its triennial open contest! Get ready for UTS Open '24!

The contest will begin on December 31st, 2024 00:00 EST and will last one week. Participants will have a 3 hour window to solve 6 problems.

The contest is rated for participants with a rating less than 2400.

For more information, please visit the contest page.

Good luck, have fun, and happy new year!

On the Usage of AI in Contests

Riolku posted on Dec. 30, 2024, 4:57 a.m. 9

Hello everyone,

As you are likely all aware, AI has improved dramatically at programming recently. Starting now, all usage of AI on rated contests is prohibited. This includes but is not limited to, ChatGPT and Copilot.

We thank you for your cooperation.

Arcadia Computing Contest

kevlu8 posted on Nov. 10, 2024, 7:14 p.m. 1

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!

OTHS Coding Competition 2

Ivan_Li, Humanthe2nd posted on Sept. 22, 2024, 9:33 p.m. 1

OTHS Banner

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!

IOI '24 Day 1 and 2 Problems Posted

Kirito, maxcruickshanks, X_Ray posted on Sept. 17, 2024, 1:23 p.m. 0

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!

  • BalintR - IOI Gold,
  • skittles1412 - IOI Gold,
  • Trentium - Honourable mention
  • Mkswll - Representing Canada!
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Ongoing contests

2026 Canadian Computing Competition Senior Division Mirror
Ends in 12 days 06:56:01.
2026 Canadian Computing Competition Junior Division Mirror
Ends in 12 days 06:56:01.
2026 Canadian Informatics Workshop - Day 1 Mirror
Ends in 12 days 06:56:01.
2026 Canadian Informatics Workshop - Day 2 Mirror
Ends in 12 days 06:56:01.

Upcoming contests

GCC '26 #1
Starting in 12 days 06:56:02.

Comment stream Discord

  • alexandreriedopro → CCO '96 P2 - SafeBreaker
  • do_ur_homwork → CCC '26 S1 - Baby Hop, Giant Hop
  • Sucram314 → CCC '26 S1 - Baby Hop, Giant Hop
  • vsarca → APIO '16 P2 - Fireworks
  • alexandreriedopro → ECOO '16 R1 P2 - Spindie
  • deus_macaco → CCC '10 J1 - What is n, Daddy?
  • R_G → CCC '07 J4 - Anagram Checker
  • Kingsleyrobotcoder1 → CCC '26 J1 - Concert Tickets
  • do_ur_homwork → New Runtimes
  • JamesJiao → Hello, World! (Hard)
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New problems

  • CIW '26 P1 - Shopping Mall
  • CIW '26 P2 - Number Shuffle
  • CIW '26 P3 - Gumball Machine
  • CIW '26 P4 - Videostore
  • XORacci Tree
  • Negative Ones
  • CCC '26 S1 - Baby Hop, Giant Hop
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