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Important announcements
- [2024-12-16] NewInformation
- [2024-12-06] Regarding Rule Changes in ABC and ARC Due to Technological Advancement of Generative AI
- [2024-12-06] Rule Changes Regarding ARC's Division System
- [2024-12-04] Password Management for Your AtCoder Account
- [2024-12-03] Announcement Regarding ARC's Division System
- [2024-08-08] Restructuring of contests
Recent contest announcements
- [2024-12-20] New UNIQUE VISION Programming Contest 2024 Christmas (AtCoder Beginner Contest 385) Announcement
- [2024-12-18] New Suspension of Test Case Publication
- [2024-12-13] Toyota Programming Contest 2024#12(AtCoder Beginner Contest 384) Announcement
- [2024-12-07] AtCoder Regular Contest 189 (Div. 2) Announcement
- [2024-12-06] Daiwa Securities Co. Ltd. Programming Contest 2024(AtCoder Beginner Contest 383) Announcement
UNIQUE VISION Programming Contest 2024 Christmas (AtCoder Beginner Contest 385) Announcement
posted:We will hold <a href="https://atcoder.jp/contests/abc385">UNIQUE VISION Programming Contest 2024 Christmas (AtCoder Beginner Contest 385)</a>.
- Contest URL: https://atcoder.jp/contests/abc385
- Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20241221T2100&p1=248
- Duration: 100 minutes
- Writer: <img src="//img.atcoder.jp/assets/user/user-orange-1.png" class="user-rating-stage-m"><a href="/users/sotanishy" class="username"><span class="user-orange">sotanishy</span></a>, <img src="//img.atcoder.jp/assets/user/user-orange-1.png" class="user-rating-stage-m"><a href="/users/kyopro_friends" class="username"><span class="user-orange">kyopro_friends</span></a>, <img src="//img.atcoder.jp/assets/user/user-orange-2.png" class="user-rating-stage-m"><a href="/users/physics0523" class="username"><span class="user-orange">physics0523</span></a>, <img src="//img.atcoder.jp/assets/icon/crown_bronze.png"> <a href="/users/blackyuki" class="username"><span class="user-red">blackyuki</span></a>
- Tester: <a href="/users/yuto1115" class="username"><span class="user-red">yuto1115</span></a>, <img src="//img.atcoder.jp/assets/user/user-orange-3.png" class="user-rating-stage-m"><a href="/users/cn449" class="username"><span class="user-orange">cn449</span></a>
- Rated range: ~ 1999
- The point values: 100-200-350-425-450-525-600
We are looking forward to your participation!
Thank you for using AtCoder.
We have been publishing the test cases used in AtCoder contests via Dropbox, but we have temporarily suspended publication of the test cases due to inappropriate use by some users.
We have provided the test cases to make it easier for users to review and study, but we have seen some uses that AtCoder did not originally anticipate, such as copying the AtCoder judge system to other environments.
In order to prevent such uses, we are working to set restrictions on the use of the test cases.
We sincerely apologize for any inconvenience this may cause to our users.
We look forward to your continued support of AtCoder.
We will hold <a href="https://atcoder.jp/contests/abc384">Toyota Programming Contest 2024#12(AtCoder Beginner Contest 384)</a>.
- Contest URL: https://atcoder.jp/contests/abc384
- Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20241214T2100&p1=248
- Duration: 100 minutes
- Writer: <img src="//img.atcoder.jp/assets/user/user-orange-1.png" class="user-rating-stage-m"><a href="/users/MMNMM" class="username"><span class="user-orange">MMNMM</span></a>, <img src="//img.atcoder.jp/assets/user/user-orange-1.png" class="user-rating-stage-m"><a href="/users/sounansya" class="username"><span class="user-orange">sounansya</span></a>, <img src="//img.atcoder.jp/assets/user/user-orange-2.png" class="user-rating-stage-m"><a href="/users/physics0523" class="username"><span class="user-orange">physics0523</span></a>
- Tester: <img src="//img.atcoder.jp/assets/user/user-orange-4.png" class="user-rating-stage-m"><a href="/users/Nyaan" class="username"><span class="user-orange">Nyaan</span></a>, <img src="//img.atcoder.jp/assets/user/user-orange-4.png" class="user-rating-stage-m"><a href="/users/mechanicalpenciI" class="username"><span class="user-orange">mechanicalpenciI</span></a>
- Rated range: ~ 1999
- The point values: 100-200-300-400-450-500-575
We are looking forward to your participation!
We will hold <a href="https://atcoder.jp/contests/arc189">AtCoder Regular Contest 189 (Div. 2)</a>.
- Contest URL: https://atcoder.jp/contests/arc189
- Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20241208T2100&p1=248
- Duration: 120 minutes
- Number of Tasks: 5
- Writer: <img src="//img.atcoder.jp/assets/user/user-orange-1.png" class="user-rating-stage-m"><a href="/users/leaf1415" class="username"><span class="user-orange">leaf1415</span></a>, <img src="//img.atcoder.jp/assets/user/user-orange-4.png" class="user-rating-stage-m"><a href="/users/mechanicalpenciI" class="username"><span class="user-orange">mechanicalpenciI</span></a>, <img src="//img.atcoder.jp/assets/icon/crown_bronze.png"> <a href="/users/PCTprobability" class="username"><span class="user-red">PCTprobability</span></a>
- Tester: <img src="//img.atcoder.jp/assets/user/user-orange-4.png" class="user-rating-stage-m"><a href="/users/Nyaan" class="username"><span class="user-orange">Nyaan</span></a>
- Rated range: 1200 ~ 2399
The point values will be 400-500-600-700-800.
We are looking forward to your participation!
Daiwa Securities Co. Ltd. Programming Contest 2024(AtCoder Beginner Contest 383) Announcement
posted:We will hold <a href="https://atcoder.jp/contests/abc383">Daiwa Securities Co. Ltd. Programming Contest 2024(AtCoder Beginner Contest 383)</a>.
- Contest URL: https://atcoder.jp/contests/abc383
- Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20241207T2100&p1=248
- Duration: 100 minutes
- Writer: <img src="//img.atcoder.jp/assets/user/user-yellow-4.png" class="user-rating-stage-m"><a href="/users/MtSaka" class="username"><span class="user-yellow">MtSaka</span></a>, <img src="//img.atcoder.jp/assets/user/user-orange-3.png" class="user-rating-stage-m"><a href="/users/nok0" class="username"><span class="user-orange">nok0</span></a>, <a href="/users/evima" class="username"><span class="user-unrated">evima</span></a>
- Tester: <img src="//img.atcoder.jp/assets/user/user-orange-2.png" class="user-rating-stage-m"><a href="/users/physics0523" class="username"><span class="user-orange">physics0523</span></a>, <img src="//img.atcoder.jp/assets/user/user-orange-1.png" class="user-rating-stage-m"><a href="/users/kyopro_friends" class="username"><span class="user-orange">kyopro_friends</span></a>
- Rated range: ~ 1999
- The point values: 150-250-350-400-500-525-625
We are looking forward to your participation!