AtCoder Home Contest Ranking English 日本語 English Sign Up Sign In Contest Permanent Contests First-time users: practice contest / Library testing: AtCoder Library Practice Contest Upcoming Contests Start Time Contest Name 2026-08-15 21:00:00+0900 Ⓐ◉ AtCoder Beginner Contest 471 2026-08-16 21:00:00+0900 Ⓐ◉ AtCoder Regular Contest 227 2026-08-22 21:00:00+0900 Ⓐ◉ AtCoder Beginner Contest 472 2026-08-29 15:00:00+0900 Ⓗ◉ 13th Asprova Programming Contest（AtCoder Heuristic Contest 070） 2026-08-29 21:00:00+0900 Ⓐ◉ AtCoder Beginner Contest 473 2026-09-06 13:10:00+0900 Ⓐ◉ AtCoder Beginner Contest 474 Recent Contests Start Time Contest Name 2026-07-31 19:00:00+0900 Ⓗ◉ RECRUIT Nihonbashi Half Marathon 2026 Summer (AtCoder Heuristic Contest 069) 2026-08-09 21:00:00+0900 Ⓐ◉ UNIQUE VISION Programming Contest 2026 Summer (AtCoder Regular Contest 226) 2026-08-08 21:00:00+0900 Ⓐ◉ JPRS Programming Contest 2026#2 (AtCoder Beginner Contest 470) 2026-08-01 21:00:00+0900 Ⓐ◉ AtCoder Beginner Contest 469 2026-07-25 21:00:00+0900 Ⓐ◉ AtCoder Beginner Contest 468 Daily Contests Start Time Contest Name 2026-08-14 20:00:00+0900 Ⓐ◉ AtCoder Weekday Contest 0135 Beta Detail Ranking: Algorithm Last Updated: 2026-08-11 19:46:13+0900 User Rating 1 tourist 3797 2 ksun48 3670 3 zhoukangyang 3659 4 newbiedmy 3629 5 ecnerwala 3619 6 jiangly 3607 7 tour1st 3381 8 mulgokizary 3373 9 Radewoosh 3371 10 turmax 3370 View all Hall of Fame GP30 Ranking: Heuristic Last Updated: 2026-08-11 19:46:13+0900 User Rating 1 nikaj 3311 2 saharan 3303 3 Rafbill 3297 4 eijirou 3257 5 yosupo 3201 6 rhoo 3188 7 bowwowforeach 3187 8 asi1024 3169 9 terry_u16 3164 10 montplusa 3121 View all GP30 <a href="https://youtube.com/live/6kyPalDSI4c"><img src="https://img.atcoder.jp/carousel/awtf2026algo-english.png" class="img-responsive center-block" style="max-width: 100%"></a> <a href="https://youtube.com/live/R9DAkDF5gIs"><img src="https://img.atcoder.jp/carousel/awtf2026heuristic-english.png" class="img-responsive center-block" style="max-width: 100%"></a> Category Start Time Next Contest ABC 2026-08-15 21:00:00+0900 Ⓐ◉ AtCoder Beginner Contest 471 ARC 2026-08-16 21:00:00+0900 Ⓐ◉ AtCoder Regular Contest 227 AGC TBD AHC 2026-08-29 15:00:00+0900 Ⓗ◉ 13th Asprova Programming Contest（AtCoder Heuristic Contest 070） AWC 2026-08-14 20:00:00+0900 Ⓐ◉ AtCoder Weekday Contest 0135 Beta Important announcements [2026-07-30] Survey on Participation Divisions for Long-Term AHCs [2026-06-24] Planned Changes to the Generative AI Rules for AHC [2026-06-29] Notice Regarding the Sale of AtCoder User Submissions to AI Companies and Updates to the Terms of Service and Privacy Policy [2026-06-16] Language Update: C++23 (GCC 15.2.0) [2026-03-18] AGC Proctoring Rules [2026-02-20] Changes to ARC in 2026 [2026-01-09] Announcement of AtCoder World Tour Finals 2027 [2025-10-31] Launch of the New Judge System [2025-10-19] Postponement of the New Judge System Launch [2025-10-17] Launch of the New Judge System [2025-10-03] Regarding Rule Changes in ABC, ARC and AGC Due to Technological Advancement of Generative AI [2025-06-16] Introduction of Generative AI Rules in AHC [2025-04-17] Regarding Judge Queue Delays and Future Measures [2025-03-19] Changes to the Rated Cap of ARC Div.1 [2024-12-27] AHC's New Rating System [2025-01-15] Tentative 2025 AHC Schedule [2025-01-15] Announcement of AtCoder World Tour Finals 2026 [2016-07-20] Information [2024-12-04] Password Management for Your AtCoder Account [2024-12-02] Announcement Regarding ARC's Division System [2024-07-29] Restructuring of contests >> View all << Hide Recent announcements [2026-08-08] New UNIQUE VISION Programming Contest 2026 Summer (AtCoder Regular Contest 226) Announcement [2026-08-07] New JPRS Programming Contest 2026#2 (AtCoder Beginner Contest 470) Announcement [2026-07-31] AtCoder Beginner Contest 469 Announcement [2026-07-30] RECRUIT Nihonbashi Half Marathon 2026 Summer (AtCoder Heuristic Contest 069) Announcement [2026-07-24] AtCoder Beginner Contest 468 Announcement UNIQUE VISION Programming Contest 2026 Summer (AtCoder Regular Contest 226) Announcement posted: We will hold <a href="https://atcoder.jp/contests/arc226">UNIQUE VISION Programming Contest 2026 Summer (AtCoder Regular Contest 226)</a>. - Contest URL: https://atcoder.jp/contests/arc226 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20260809T2100&p1=248 - Duration: 120 minutes - Writer: <img src="//img.atcoder.jp/assets/icon/crown_silver.png"> <a href="/users/snuke" class="username"><span style="color:#1000AC;">snuke</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: 400-500-700-800-1000 We are looking forward to your participation! last update: JPRS Programming Contest 2026#2 (AtCoder Beginner Contest 470) Announcement posted: We will hold <a href="https://atcoder.jp/contests/abc470">JPRS Programming Contest 2026#2 (AtCoder Beginner Contest 470)</a>. - Contest URL: https://atcoder.jp/contests/abc470 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20260808T2100&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>, <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/kyopro_friends" class="username"><span class="user-orange">kyopro_friends</span></a> - Tester： <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></a> - Rated range: ~ 1999 - The point values: 100-200-300-400-450-500-600 We are looking forward to your participation! last update: AtCoder Beginner Contest 469 Announcement posted: We will hold <a href="https://atcoder.jp/contests/abc469">AtCoder Beginner Contest 469</a>. - Contest URL: https://atcoder.jp/contests/abc469 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20260801T2100&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/icon/crown_bronze.png"> <a href="/users/cn449" class="username"><span class="user-red">cn449</span></a> - Tester: <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>, <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/harurun4635" class="username"><span class="user-orange">harurun4635</span></a> - Rated range: ~ 1999 - The point values: 100-200-300-400-475-500-575 We are looking forward to your participation! last update: RECRUIT Nihonbashi Half Marathon 2026 Summer (AtCoder Heuristic Contest 069) Announcement posted: 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! last update: AtCoder Beginner Contest 468 Announcement posted: 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_fri…