We will hold <a href="https://atcoder.jp/contests/arc224">AtCoder Regular Contest-- 224</a>. - Contest URL: https://atcoder.jp/contests/arc224 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20260712T2100&p1=248 - Duration: 120 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/user/user-yellow-2.png" class="user-rating-stage-m"><a href="/users/ynymxiaolongbao" class="username"><span class="user-yellow">ynymxiaolongbao</span></a>, <img src="//img.atcoder.jp/assets/user/user-orange-1.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-1.png" class="user-rating-stage-m"><a href="/users/physics0523" class="username"><span class="user-orange">physics0523</span></a> - Rated range: 800 ~ 2399 - Point Values: 300-400-500-500-500-700 We are looking forward to your participation!

We will hold <a href="https://atcoder.jp/contests/abc466">AtCoder Beginner Contest 466</a>. - Contest URL: https://atcoder.jp/contests/abc466 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20260711T2100&p1=248 - Duration: 100 minutes - Writer: <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/cn449" class="username"><span class="user-red">cn449</span></a>, <img src="//img.atcoder.jp/assets/user/user-orange-2.png" class="user-rating-stage-m"><a href="/users/sounansya" class="username"><span class="user-orange">sounansya</span></a> - Tester: <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-3.png" class="user-rating-stage-m"><a href="/users/harurun4635" class="username"><span class="user-orange">harurun4635</span></a>, <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> - Rated range: ~ 1999 - The point values: 100-200-300-400-450-500-600 We are looking forward to your participation!

We will hold AtCoder World Tour Finals 2026 Algorithm. - Contest URL: https://atcoder.jp/contests/awtf2026algo - Mirror Contest URL: https://atcoder.jp/contests/awtf2026algo-open - Start Time: https://www.timeanddate.com/worldclock/fixedtime.html?iso=20260709T1100&p1=248 - Duration: 420 minutes - Number of Tasks: 5 - Writer: <a href="/user/maroonrk" class="username"><span style="color:#869120;">maroonrk</span></a> - Tester: <img src="//img.atcoder.jp/assets/icon/crown_silver.png"> <a href="/user/hos_lyric" class="username"><span style="color:#CAD8F5;">hos_lyric</span></a>, <img src="//img.atcoder.jp/assets/icon/crown_silver.png"> <a href="/user/tatyam" class="username"><span class="user-red">tatyam</span></a>, <img src="//img.atcoder.jp/assets/icon/crown_bronze.png"> <a href="/user/maspy" class="username"><span class="user-red">maspy</span></a>, <img src="//img.atcoder.jp/assets/icon/crown_bronze.png"> <a href="/user/yosupo" class="username"><span class="user-red">yosupo</span></a>, <img src="//img.atcoder.jp/assets/icon/crown_bronze.png"> <a href="/user/sigma425" class="username"><span class="user-red">sigma425</span></a> - Rated range: Unrated The point values will be 900-900-1500-2500-2500. We don't freeze the standings in the contest. AtCoder World Tour Finals 2026 is an international onsite contest. We have invited top-runners of AtCoder Race Ranking 2025 to Tokyo. This year, as an exhibition match, an AI agent from OpenAI will also participate in the contest. On the contest day, we will stream the contest on our YouTube channel. For more details, please visit this page (https://info.atcoder.jp/more/contents/awtf/2026). The mirror contest is Unrated and the standings is hidden. Other rules are the same as AGC.

We will hold <a href="https://atcoder.jp/contests/abc465">AtCoder Beginner Contest 465</a>. - Contest URL: https://atcoder.jp/contests/abc465 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20260704T2100&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/user/user-orange-2.png" class="user-rating-stage-m"><a href="/users/sounansya" class="username"><span class="user-orange">sounansya</span></a> - Tester: <img src="//img.atcoder.jp/assets/user/user-yellow-4.png" class="user-rating-stage-m"><a href="/users/MMNMM" class="username"><span class="user-yellow">MMNMM</span></a>, <img src="//img.atcoder.jp/assets/user/user-orange-1.png" class="user-rating-stage-m"><a href="/users/KumaTachiRen" class="username"><span class="user-orange">KumaTachiRen</span></a> - Rated range: ~ 1999 - The point values: 100-200-300-400-450-525-625 We are looking forward to your participation!

We will hold <a href="https://atcoder.jp/contests/arc223">AtCoder Regular Contest 223</a>. - Contest URL: https://atcoder.jp/contests/arc223 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20260628T2100&p1=248 - Duration: 120 minutes - Writer: <img src="//img.atcoder.jp/assets/user/user-orange-1.png" class="user-rating-stage-m"><a href="/users/vwxyz" class="username"><span class="user-orange">vwxyz</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/icon/crown_bronze.png"> <a href="/users/maspy" class="username"><span class="user-red">maspy</span></a> - Rated range: 1200 ~ 2799 - Point Values: 400-500-500-600-700-800 We are looking forward to your participation!