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Yet Another Contest 8

Josh, RandomLB, andy_zhu23 posted on Jan. 31, 2024, 3:03 p.m. 5

YAC Banner

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!

Happy Hackers Programming Challenge

AustinJiang posted on Jan. 27, 2024, 5:12 p.m. 0

Hi everyone!

This sunday, we're hosting our first Happy Hackers Programming Challenge!

The contest is rated for all users with a rating less than 2600.

For more details, please check out the contest page.

Good luck!

Mock CCC 1

elex, Tommy_Shan, yunz_qiao posted on Jan. 18, 2024, 3:41 a.m. 0
Mock CCC Banner

Hi everyone,

This weekend, we're hosting the first Mock CCC of the season!

The contests are unrated. You can read further details about them on the junior and senior pages.

UPDATE: The contests are now 1 week in length.

Have fun!

WOSS Dual Olympiad 2023 Mirror

pewpew, 404 posted on Jan. 13, 2024, 8:32 p.m. 0

Hello!

This Sunday, we are hosting mirrors of the WOSS Dual Olympiad 2023!

There are three contests - junior, senior, and team. The contests are unrated. Please see the respective contest pages for more details.

Have fun!

Unionville Algorithmic Coding Challenge 1

ayay9, RickeyZ, DavisLiu, 7kxb posted on Jan. 5, 2024, 12:43 a.m. 0

The contest is now finished! Special congrats to the prize winners:

  • For first place, Gennady.
  • For first in UHS, RockyS
  • First raffle winner, blueishfiend692
  • Second raffle winner, exe_pc

Thanks for writing!


UACC1 Banner

Hi everyone!

This friday, we will be hosting the first Unionville Algorithmic Coding Challenge, a contest hosted by Unionville High School!

The contest will be unrated, but there will be prizes, including a raffle prize! See the contest page for more details.

Good luck!

DMOPC '23 December Contest

4fecta, yzhao123 posted on Nov. 26, 2023, 9:32 p.m. 0

The contest is now finished! Special congrats to the top 5 contestants:

  1. Gennady
  2. kotatsugame
  3. ksun48
  4. maspy
  5. ecnerwal

Hope to see everyone again soon!


Hi everyone! The DMOPC is finally back for the 2023-2024 school year, kicking off with a contest scheduled for the beginning of December!

The contest will run from Friday, December 1st to Monday, December 4th (inclusive of both days).

Anyone with a DMOJ account is welcome to participate, and anyone without one is welcome to register and participate.

Contestants may participate in any 3-hour window between 00:00:00 ET of December 1st and 00:00:00 ET of December 5th.

Please see the contest page for more details.

Best of luck to all participants!

Singularity Cup

Mystical posted on Nov. 1, 2023, 4:28 a.m. 0

Thanks for participating!

Congratulations to the top 5 contestants:

  1. Gennady (prize winner)
  2. lyrically
  3. ecnerwal
  4. jeroenopdebeek
  5. bruce

singularity cup banner

Hi everyone!

This Friday, we'll be running a new rated contest called Singularity Cup.

There will be a $100 CAD cash prize for the first place competitor, which will be sent by e-transfer or PayPal.

The contest will run from Friday, November 3rd, to Monday, November 6th. There will be a 3-hour window to complete 6 problems.

The contest will be rated for all participants.

For more details, visit the contest page.

IOI '23 Day 1 and 2 Problems Posted

Kirito, maxcruickshanks, X_Ray posted on Sept. 1, 2023, 2:08 a.m. 1

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!

  • skittles1412 - IOI Gold,
  • BalintR - IOI Silver,
  • littlecat - IOI Silver,
  • marsxiang5902 - IOI Bronze!

Yet Another Contest 7

Josh, Nils_Emmenegger, RandomLB posted on Aug. 5, 2023, 10:48 a.m. 0

YAC Banner

Hi everyone!

Yet another time, this is 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, August 11th to Thursday, August 17th. 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. This differs from the previous YAC.

Good luck and have fun!

DMOPC '22 June Contest

Riolku, 4fecta, yzhao123 posted on June 13, 2023, 11:41 p.m. 0

And that marks the end of the last DMOPC of the school year! Special congrats to the top 5 contestants:

  1. ksun48 (perfect score!)
  2. Gennady (perfect score!)
  3. hitonanode (perfect score!)
  4. dnialh_
  5. potato167

We hope you enjoy your summer, and we'll see you again next year!


Hmm, I wonder what the M stands for in DMOPC... Regardless of what it means, we're back with one final contest to wrap up the 2022-2023 school year!

The contest will run from Friday, June 16th to Monday, June 19th (inclusive of both days).

Anyone with a DMOJ account is welcome to participate, and anyone without one is welcome to register and participate.

Contestants may participate in any 3-hour window between 00:00:00 EDT of June 16th and 00:00:00 EDT of June 20th.

Please see the contest page for more details.

頑張りましょう!

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Ongoing contests

2025 Canadian Computing Olympiad - Day 1 Mirror
Ends in 06:01:58.
2025 Canadian Computing Olympiad - Day 2 Mirror
Ends in 06:01:58.
2025 Canadian Informatics Workshop - Day 1 Mirror
Ends in 06:01:58.
2025 Canadian Informatics Workshop - Day 2 Mirror
Ends in 06:01:58.

Comment stream Discord

  • lovelyAnt → DMOPC '14 Contest 7 P2 - Tides
  • Kirito → CCO '25 and CIW '25 Problems Posted
  • liympanda → CCO '25 and CIW '25 Problems Posted
  • AndyZhang68 → Baltic OI '11 P3 - Switch the Lamp On
  • Marie → CCC '02 S2 - Fraction Action
  • Humanthe2nd → Editorial for Baltic OI '11 P2 - Ice Cream
  • Antt → CCC '25 J2 - Donut Shop
  • maxcruickshanks → Bruce's CCO Training Contest 3
  • secret36 → CCC '25 J2 - Donut Shop
  • kezhenqing → ECOO '17 R1 P1 - Munch 'n' Brunch
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New problems

  • Fives
  • OTHS Coding Competition 4 P1 - Square Root Decomposition
  • OTHS Coding Competition 4 P2 - Furina's Rounding
  • OTHS Coding Competition 4 P3 - Photo
  • OTHS Coding Competition 4 P4 - Mathemagical Experiment
  • OTHS Coding Competition 4 P5 - Teleport
  • CIW '25 P1 - Course Override
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