We will hold <a href="https://atcoder.jp/contests/ahc074">HACK TO THE FUTURE 2027 (AtCoder Heuristic Contest 074)</a>. - Contest URL: https://atcoder.jp/contests/ahc074 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20261030T1900&p1=248 - Duration: 10 days - Division Change Deadline: Within 48 hours after the contest starts. - Writer: <a href="/users/wata_admin" class="username"><span class="user-unrated">wata_admin</span></a> - Rated range: All (Heuristic Rating) This contest is one of the qualifying contests for <a href="https://atcoder.jp/posts/1636">AWTF 2027</a>. <b>This contest will be held in two divisions: the Human only division, where the use of generative AI is prohibited, and the With AI division, where generative AI can be used freely.</b> For details, please see <a href='https://atcoder.jp/posts/long-ahc-divisions-2026_en'>Format of Upcoming Long-Term AtCoder Heuristic Contests (AHC)</a> Whether you're looking to make greater use of generative AI or prefer to tackle challenges without relying on it, we look forward to your participation!

We will hold <a href="https://atcoder.jp/contests/arc233">AtCoder Regular Contest++ 233</a>. - Contest URL: https://atcoder.jp/contests/arc233 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20261025T2100&p1=248 - Duration: 150 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: 1600 ~ 2999 - Point Values: 700-900-900-900 We are looking forward to your participation!

We will hold <a href="https://atcoder.jp/contests/abc481">SMBC Programming Contest #2 (AtCoder Beginner Contest 481）</a>. - Contest URL: https://atcoder.jp/contests/abc481 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20261024T2100&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/harurun4635" class="username"><span class="user-red">harurun4635</span></a>, <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-yellow-4.png" class="user-rating-stage-m"><a href="/users/physics0523" class="username"><span class="user-yellow">physics0523</span></a>, <img src="//img.atcoder.jp/assets/user/user-orange-3.png" class="user-rating-stage-m"><a href="/users/sounansya" class="username"><span class="user-orange">sounansya</span></a> - Rated range: ~ 1999 - The point values: 100-200-300-400-450-525-600 We are looking forward to your participation!

We will hold <a href="https://atcoder.jp/contests/abc480">AtCoder Beginner Contest 480</a>. - Contest URL: https://atcoder.jp/contests/abc480 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20261017T2100&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/vwxyz" class="username"><span class="user-orange">vwxyz</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> - Tester: <img src="//img.atcoder.jp/assets/user/user-yellow-3.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: 100-200-300-400-450-525-600 We are looking forward to your participation!

We will hold <a href="https://atcoder.jp/contests/ahc073">AtCoder Heuristic Contest 073</a>. - Contest URL: https://atcoder.jp/contests/ahc073 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20261017T1500&p1=248 - Duration: 4 hours - Writer: <a href="/users/wata_admin" class="username"><span class="user-unrated">wata_admin</span></a> - Rated range: All (Heuristic Rating) This contest is one of the qualifying contests for <a href="https://atcoder.jp/posts/1636">AWTF 2027</a>. We are looking forward to your participation!