We will hold <a href="https://atcoder.jp/contests/ahc069">RECRUIT Nihonbashi Half Marathon 2026 Summer (AtCoder Heuristic Contest 069)</a>. - Contest URL: https://atcoder.jp/contests/ahc069 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20260731T1900&p1=248 - Duration: 10 days - Staff：<a href="https://atcoder.jp/users/cozy_sauna?contestType=heuristic" class="username user-orange"><span class="user-orange">cozy_sauna</span></a>, <a href="https://atcoder.jp/users/crinoid_t" class="username user-gray"><span class="user-gray">crinoid\_t</span></a>, <a href="https://atcoder.jp/users/dpforest" class="username user-blue"><span class="user-blue">dpforest</span></a>, <a href="https://atcoder.jp/users/eha" class="username user-yellow"><span class="user-yellow">eha</span></a>, <a href="https://atcoder.jp/users/fky_?contestType=heuristic" class="username user-yellow"><span class="user-yellow">fky_</span></a>, <a href="https://atcoder.jp/users/FLOPPY_30" class="username user-blue"><span class="user-blue">FLOPPY_30</span></a>, <a href="https://atcoder.jp/users/frnfnts" class="username user-cyan"><span class="user-cyan">frnfnts</span></a>, <a href="https://atcoder.jp/users/hamray" class="username user-blue"><span class="user-blue">hamray</span></a>, <a href="https://atcoder.jp/users/hashiryo" class="username user-yellow"><span class="user-yellow">hashiryo</span></a>, <a href="https://atcoder.jp/users/hedwig" class="username user-blue"><span class="user-blue">hedwig</span></a>, <a href="https://atcoder.jp/users/japlj" class="username user-red"><span class="user-red">japlj</span></a>, <a href="https://atcoder.jp/users/kanra824" class="username user-blue"><span class="user-blue">kanra824</span></a>, <a href="https://atcoder.jp/users/kys" class="username user-blue"><span class="user-blue">kys</span></a>, <a href="https://atcoder.jp/users/miz56" class="username user-blue"><span class="user-blue">miz56</span></a>, <a href="https://atcoder.jp/users/n_knuu" class="username user-blue"><span class="user-blue">n_knuu</span></a>, <a href="https://atcoder.jp/users/roiti" class="username user-blue"><span class="user-blue">roiti</span></a>, <a href="https://atcoder.jp/users/ruthen71" class="username user-yellow"><span class="user-yellow">ruthen71</span></a>, <a href="https://atcoder.jp/users/samasama" class="username user-green"><span class="user-green">samasama</span></a>, <a href="https://atcoder.jp/users/shichinomiya" class="username user-cyan"><span class="user-cyan">shichinomiya</span></a>, <a href="https://atcoder.jp/users/shiratty8" class="username user-yellow"><span class="user-yellow">shiratty8</span></a>, <a href="https://atcoder.jp/users/smiken" class="username user-orange"><span class="user-orange">smiken</span></a>, <a href="https://atcoder.jp/users/sugim48" class="username"><span style="color:#C06000;">sugim48</span></a>, <a href="https://atcoder.jp/users/tomerun?contestType=heuristic" class="username user-red"><span class="user-red">tomerun</span></a>, <a href="https://atcoder.jp/users/yupiteru?contestType=heuristic" class="username user-yellow"><span class="user-yellow">yupiteru</span></a>, <a href="https://atcoder.jp/users/yusk" class="username user-cyan"><span class="user-cyan">yusk</span></a>, and others. - 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 have posted important information regarding the use of generative AI on the top page and at the end of the problem statement. Please make sure to read it.** We are looking forward to your participation!

We will hold <a href="https://atcoder.jp/contests/abc468">AtCoder Beginner Contest 468</a>. - Contest URL: https://atcoder.jp/contests/abc468 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20260725T2100&p1=248 - Duration: 100 minutes - Writer: <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/sheyasutaka" class="username"><span class="user-orange">sheyasutaka</span></a> - Rated range: ~ 1999 - The point values: 100-200-300-400-450-500-550 We are looking forward to your participation!

We will hold <a href="https://atcoder.jp/contests/arc225">AtCoder Regular Contest 225</a>. - Contest URL: https://atcoder.jp/contests/arc225 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20260719T2100&p1=248 - Duration: 120 minutes - Writer: <img src="//img.atcoder.jp/assets/user/user-yellow-1.png" class="user-rating-stage-m"><a href="/users/milkcoffee" class="username"><span class="user-yellow">milkcoffee</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: 500-600-600-600-900 We are looking forward to your participation!

We will hold <a href="https://atcoder.jp/contests/abc467">AtCoder Beginner Contest 467</a>. - Contest URL: https://atcoder.jp/contests/abc467 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20260718T2100&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-4.png" class="user-rating-stage-m"><a href="/users/Nyaan" class="username"><span class="user-orange">Nyaan</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-2.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: 100-200-300-425-450-525-625 We are looking forward to your participation!

We will hold <a href="https://atcoder.jp/contests/ahc068">estie Programming Contest 2026 (AtCoder Heuristic Contest 068)</a>. - Contest URL: https://atcoder.jp/contests/ahc068 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20260718T1500&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>. <b> This will be the final short contest to which the current generative AI rules apply. Starting with the next short contest, the new generative AI rules will take effect. We have also posted important information regarding the use of generative AI on the top page and at the end of the problem statement. Please make sure to read it. </b> We are looking forward to your participation!