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We will hold <a href="https://atcoder.jp/contests/arc211">AtCoder Regular Contest 211 (Div. 2)</a>.
- Contest URL: https://atcoder.jp/contests/arc211
- Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20251130T2100&p1=248
- Duration: 120 minutes
- Number of Tasks: 5
- Writer: <img src="//img.atcoder.jp/assets/user/user-orange-3.png" class="user-rating-stage-m"><a href="/users/hirayuu_At" class="username"><span class="user-orange">hirayuu_At</span></a>
- Tester: <img src="//img.atcoder.jp/assets/user/user-orange-3.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/icon/crown_bronze.png"> <a href="/users/maspy" class="username"><span class="user-red">maspy</span></a>
- Rated range: 1200 ~ 2399
The point values will be 500-500-600-700-800.
We are looking forward to your participation!
We will hold <a href="https://atcoder.jp/contests/abc434">Sky Inc, Programming Contest 2025 (AtCoder Beginner Contest 434)</a>.
- Contest URL: https://atcoder.jp/contests/abc434
- Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20251129T2100&p1=248
- Duration: 100 minutes
- Writer: <img src="//img.atcoder.jp/assets/user/user-orange-3.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-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-3.png" class="user-rating-stage-m"><a href="/users/sheyasutaka" class="username"><span class="user-orange">sheyasutaka</span></a>, <img src="//img.atcoder.jp/assets/icon/crown_bronze.png"> <a href="/users/yuto1115" class="username"><span class="user-red">yuto1115</span></a>
- Rated range: ~ 1999
- The point values: 100-200-300-425-500-575-650
We are looking forward to your participation!
We will hold <a href="https://atcoder.jp/contests/ahc057">AtCoder Heuristic Contest 057</a>.
- Contest URL: https://atcoder.jp/contests/ahc057
- Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20251129T1500&p1=248
- Duration: 4 hours
- Writer: <img src="//img.atcoder.jp/assets/icon/crown_bronze.png"> <a href="https://atcoder.jp/user/PrussianBlue" class="username"><span class="user-orange">PrussianBlue</span></a>
- Rated range: All (Heuristic Rating)
This contest is one of the qualifying contests for <a href="https://atcoder.jp/posts/1394">AWTF 2026</a>.
We are looking forward to your participation!
We will hold <a href="https://atcoder.jp/contests/abc433">AtCoder Beginner Contest 433</a>.
- Contest URL: https://atcoder.jp/contests/abc433
- Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20251122T2100&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/sounansya" class="username"><span class="user-yellow">sounansya</span></a>
- Tester: <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/kyopro_friends" class="username"><span class="user-orange">kyopro_friends</span></a>
- Rated range: ~ 1999
- The point values: 100-200-300-400-450-500-600
We are looking forward to your participation!
We will hold <a href="https://atcoder.jp/contests/arc210">AtCoder Regular Contest 210</a>.
- Contest URL: https://atcoder.jp/contests/arc210
- Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20251116T2100&p1=248
- Duration: 120 minutes
- Number of Tasks: 6
- Writer: <img src="//img.atcoder.jp/assets/icon/crown_bronze.png"> <a href="/users/maspy" class="username"><span class="user-red">maspy</span></a>
- Tester: <img src="//img.atcoder.jp/assets/user/user-orange-3.png" class="user-rating-stage-m"><a href="/users/Nyaan" class="username"><span class="user-orange">Nyaan</span></a>
- Rated range: 1200 ~ 2799
The point values will be 300-600-700-800-1000-1100.
We are looking forward to your participation!
We will hold <a href="https://atcoder.jp/contests/abc432">OMRON Corporation Programming Contest 2025 #2 (AtCoder Beginner Contest 432)</a>.
- Contest URL: https://atcoder.jp/contests/abc432
- Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20251115T2100&p1=248
- Duration: 100 minutes
- Writer: <img src="//img.atcoder.jp/assets/user/user-orange-3.png" class="user-rating-stage-m"><a href="/users/sheyasutaka" class="username"><span class="user-orange">sheyasutaka</span></a>, <img src="//img.atcoder.jp/assets/icon/crown_bronze.png"> <a href="/users/yuto1115" class="username"><span class="user-red">yuto1115</span></a>
- Tester: <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/user/user-orange-2.png" class="user-rating-stage-m"><a href="/users/physics0523" class="username"><span class="user-orange">physics0523</span></a>
- Rated range: ~ 1999
- The point values: 100-200-350-425-450-525-575
We are looking forward to your participation!
We will hold <a href="https://atcoder.jp/contests/arc209">AtCoder Regular Contest 209 (Div. 1)</a>.
- Contest URL: https://atcoder.jp/contests/arc209
- Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20251109T2100&p1=248
- Duration: 150 minutes
- Number of Tasks: 5
- Writer: <a href="/users/blackyuki" class="username"><span class="user-red">blackyuki</span></a>, <img src="//img.atcoder.jp/assets/user/user-orange-4.png" class="user-rating-stage-m"><a href="/users/KoD" class="username"><span class="user-orange">KoD</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-3.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/icon/crown_bronze.png"> <a href="/users/maspy" class="username"><span class="user-red">maspy</span></a>
- Rated range: 1600 ~ 2999
The point values will be 700-700-900-900-1100.
We are looking forward to your participation!
We will hold <a href="https://atcoder.jp/contests/abc431">TOYOTA SYSTEMS Programming Contest 2025(AtCoder Beginner Contest 431)</a>.
- Contest URL: https://atcoder.jp/contests/abc431
- Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20251108T2100&p1=248
- Duration: 100 minutes
- Writer: <img src="//img.atcoder.jp/assets/user/user-orange-3.png" class="user-rating-stage-m"><a href="/users/toam" class="username"><span class="user-orange">toam</span></a>, <img src="//img.atcoder.jp/assets/user/user-orange-2.png" class="user-rating-stage-m"><a href="/users/MMNMM" class="username"><span class="user-orange">MMNMM</span></a>
- Tester: <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/icon/crown_bronze.png"> <a href="/users/cn449" class="username"><span class="user-red">cn449</span></a>
- Rated range: ~ 1999
- The point values: 100-200-300-400-500-500-575
We are looking forward to your participation!
We will hold <a href="https://atcoder.jp/contests/ahc056">HACK TO THE FUTURE 2026 (AtCoder Heuristic Contest 056)</a>.
- Contest URL: https://atcoder.jp/contests/ahc056
- Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20251107T1900&p1=248
- Duration: 10 days
- Writer: <a href="/users/wata_admin" class="username"><span class="user-unrated">wata_admin</span></a>
- Staff: <img src="//img.atcoder.jp/assets/icon/crown_bronze.png"><a href="https://atcoder.jp/users/tsukammo?contestType=heuristic" class="username user-orange"><span class="user-orange">tsukammo</span></a>, <a href="https://atcoder.jp/users/kudryavka_chan?contestType=heuristic" class="username user-yellow"><span class="user-yellow">kudryavka_chan</span></a>, <a href="https://atcoder.jp/users/platinum?contestType=heuristic" class="username user-yellow"><span class="user-yellow">platinum</span></a>, <a href="https://atcoder.jp/users/ppputtyo?contestType=heuristic" class="username user-blue"><span class="user-blue">ppputtyo</span></a>, <a href="https://atcoder.jp/users/syunsuke?contestType=heuristic" class="username user-blue"><span class="user-blue">syunsuke</span></a>
- Rated range: All (Heuristic Rating)
This contest is one of the qualifying contests for <a href="https://atcoder.jp/posts/1394">AWTF 2026</a>.
This contest will be held using the new judge system.
For more details, please see <a href="https://atcoder.jp/posts/1580">this page</a>.
We are looking forward to your participation!
We will hold <a href="https://atcoder.jp/contests/abc430">AtCoder Beginner Contest 430</a>.
- Contest URL: https://atcoder.jp/contests/abc430
- Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20251101T2100&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/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>
- Tester: <img src="//img.atcoder.jp/assets/user/user-orange-3.png" class="user-rating-stage-m"><a href="/users/sheyasutaka" class="username"><span class="user-orange">sheyasutaka</span></a>, <img src="//img.atcoder.jp/assets/user/user-orange-3.png" class="user-rating-stage-m"><a href="/users/Nyaan" class="username"><span class="user-orange">Nyaan</span></a>
- Rated range: ~ 1999
- The point values: 100-250-300-400-450-500-625
We have updated the rating system. As these changes will apply starting with this contest, please see [this post](https://atcoder.jp/posts/1592) for details.
We are looking forward to your participation!