Post Archive - AtCoder

AtCoder Beginner Contest 449 Announcement

posted:

We will hold <a href="https://atcoder.jp/contests/abc449">AtCoder Beginner Contest 449</a>. - Contest URL: https://atcoder.jp/contests/abc449 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20260314T2100&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/sounansya" class="username">sounansya</a>, <img src="//img.atcoder.jp/assets/icon/crown_bronze.png"> <a href="/users/cn449" class="username">cn449</a>, <img src="//img.atcoder.jp/assets/user/user-orange-3.png" class="user-rating-stage-m"><a href="/users/toam" class="username">toam</a> - Tester: <img src="//img.atcoder.jp/assets/user/user-orange-2.png" class="user-rating-stage-m"><a href="/users/harurun4635" class="username">harurun4635</a>, <img src="//img.atcoder.jp/assets/user/user-orange-1.png" class="user-rating-stage-m"><a href="/users/KumaTachiRen" class="username">KumaTachiRen</a> - Rated range: ~ 1999 - The point values: 100-200-300-425-475-500-600 We are looking forward to your participation!

last update:

UNIQUE VISION Programming Contest 2026 Spring (AtCoder Heuristic Contest 062) Announcement

posted:

We will hold <a href="https://atcoder.jp/contests/ahc062">UNIQUE VISION Programming Contest 2026 Spring (AtCoder Heuristic Contest 062)</a>. - Contest URL: https://atcoder.jp/contests/ahc062 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20260314T1500&p1=248 - Duration: 4 hours - Writer: <a href="/users/Kiri8128" class="username"><img src="//img.atcoder.jp/assets/icon/crown_bronze.png"> Kiri8128</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!

last update:

AtCoder Beginner Contest 448 Announcement

posted:

We will hold <a href="https://atcoder.jp/contests/abc448">AtCoder Beginner Contest 448</a>. - Contest URL: https://atcoder.jp/contests/abc448 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20260307T2100&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/Nyaan" class="username">Nyaan</a>, <img src="//img.atcoder.jp/assets/user/user-orange-1.png" class="user-rating-stage-m"><a href="/users/physics0523" class="username">physics0523</a>, <img src="//img.atcoder.jp/assets/user/user-orange-3.png" class="user-rating-stage-m"><a href="/users/toam" class="username">toam</a>, <img src="//img.atcoder.jp/assets/user/user-yellow-2.png" class="user-rating-stage-m"><a href="/users/ynymxiaolongbao" class="username">ynymxiaolongbao</a>, <img src="//img.atcoder.jp/assets/user/user-orange-1.png" class="user-rating-stage-m"><a href="/users/kyopro_friends" class="username">kyopro_friends</a> - Tester: <img src="//img.atcoder.jp/assets/user/user-orange-3.png" class="user-rating-stage-m"><a href="/users/sheyasutaka" class="username">sheyasutaka</a>, <img src="//img.atcoder.jp/assets/user/user-orange-4.png" class="user-rating-stage-m"><a href="/users/mechanicalpenciI" class="username">mechanicalpenciI</a> - Rated range: ~ 1999 - The point values: 100-200-300-400-450-525-675 We are looking forward to your participation!

last update:

AtCoder Beginner Contest 447 Announcement

posted:

We will hold <a href="https://atcoder.jp/contests/abc447">AtCoder Beginner Contest 447</a>. - Contest URL: https://atcoder.jp/contests/abc447 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20260228T2100&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/harurun4635" class="username">harurun4635</a>, <img src="//img.atcoder.jp/assets/icon/crown_bronze.png"> <a href="/users/yuto1115" class="username">yuto1115</a>, <img src="//img.atcoder.jp/assets/user/user-orange-1.png" class="user-rating-stage-m"><a href="/users/kyopro_friends" class="username">kyopro_friends</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">kyopro_friends</a>, <img src="//img.atcoder.jp/assets/user/user-orange-1.png" class="user-rating-stage-m"><a href="/users/vwxyz" class="username">vwxyz</a> - Rated range: ~ 1999 - The point values: 100-200-300-400-475-500-625 We are looking forward to your participation!

last update:

AtCoder Regular Contest 215 Announcement

posted:

We will hold <a href="https://atcoder.jp/contests/arc215">AtCoder Regular Contest 215</a>. - Contest URL: https://atcoder.jp/contests/arc215 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20260222T2100&p1=248 - Duration: 120 minutes - Writer: <img src="//img.atcoder.jp/assets/user/user-yellow-2.png" class="user-rating-stage-m"><a href="/users/ynymxiaolongbao" class="username">ynymxiaolongbao</a> - Tester: <img src="//img.atcoder.jp/assets/user/user-orange-4.png" class="user-rating-stage-m"><a href="/users/Nyaan" class="username">Nyaan</a>, <img src="//img.atcoder.jp/assets/icon/crown_bronze.png"> <a href="/users/maspy" class="username">maspy</a> - Rated range: 1200 ~ 2799 - Point Values: 500-500-600-600-700-700 We are looking forward to your participation!

last update:

AtCoder Beginner Contest 446 Announcement

posted:

We will hold <a href="https://atcoder.jp/contests/abc446">AtCoder Beginner Contest 446</a>. - Contest URL: https://atcoder.jp/contests/abc446 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20260221T2100&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">mechanicalpenciI</a>, <img src="//img.atcoder.jp/assets/user/user-orange-3.png" class="user-rating-stage-m"><a href="/users/sheyasutaka" class="username">sheyasutaka</a>, <img src="//img.atcoder.jp/assets/user/user-orange-1.png" class="user-rating-stage-m"><a href="/users/physics0523" class="username">physics0523</a>, <img src="//img.atcoder.jp/assets/user/user-orange-1.png" class="user-rating-stage-m"><a href="/users/sounansya" class="username">sounansya</a> - Tester: <img src="//img.atcoder.jp/assets/user/user-orange-1.png" class="user-rating-stage-m"><a href="/users/sounansya" class="username">sounansya</a>, <img src="//img.atcoder.jp/assets/user/user-orange-2.png" class="user-rating-stage-m"><a href="/users/toam" class="username">toam</a>, <img src="//img.atcoder.jp/assets/user/user-orange-1.png" class="user-rating-stage-m"><a href="/users/kyopro_friends" class="username">kyopro_friends</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 445 Announcement

posted:

We will hold <a href="https://atcoder.jp/contests/abc445">AtCoder Beginner Contest 445</a>. - Contest URL: https://atcoder.jp/contests/abc445 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20260214T2100&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/KumaTachiRen" class="username">KumaTachiRen</a>, <img src="//img.atcoder.jp/assets/user/user-orange-1.png" class="user-rating-stage-m"><a href="/users/MMNMM" class="username">MMNMM</a>, <img src="//img.atcoder.jp/assets/user/user-orange-3.png" class="user-rating-stage-m"><a href="/users/sheyasutaka" class="username">sheyasutaka</a> - Tester: <img src="//img.atcoder.jp/assets/user/user-orange-1.png" class="user-rating-stage-m"><a href="/users/physics0523" class="username">physics0523</a>, <img src="//img.atcoder.jp/assets/icon/crown_bronze.png"> <a href="/users/yuto1115" class="username">yuto1115</a> - Rated range: ~ 1999 - The point values: 100-200-300-425-475-500-600 We are looking forward to your participation!

last update:

THIRD Programming Contest 2026（AtCoder Heuristic Contest 061） Announcement

posted:

We will hold <a href="https://atcoder.jp/contests/ahc061">THIRD Programming Contest 2026（AtCoder Heuristic Contest 061）</a>. - Contest URL: https://atcoder.jp/contests/ahc061 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20260213T1900&p1=248 - Duration: 10 days - Writer: <img src="//img.atcoder.jp/assets/icon/crown_gold.png"> <a href="/users/Shun_PI" class="username">Shun_PI</a></li> - Rated range: All (Heuristic Rating) This contest is one of the qualifying contests for <a href="https://atcoder.jp/posts/1635">AWTF 2027</a>. We are looking forward to your participation!

last update:

AtCoder Regular Contest 214 Announcement

posted:

We will hold <a href="https://atcoder.jp/contests/arc214">AtCoder Regular Contest 214</a>. - Contest URL: https://atcoder.jp/contests/arc214 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20260208T2100&p1=248 - Duration: 120 minutes - Writer: <img src="//img.atcoder.jp/assets/icon/crown_silver.png"> <a href="/users/snuke" class="username">snuke</a> - Tester: <img src="//img.atcoder.jp/assets/user/user-orange-4.png" class="user-rating-stage-m"><a href="/users/Nyaan" class="username">Nyaan</a>, <img src="//img.atcoder.jp/assets/icon/crown_bronze.png"> <a href="/users/maspy" class="username">maspy</a> - Rated range: 1200 ~ 2799 - Point Values: 300-500-600-700-700-900 We are looking forward to your participation!

last update:

AtCoder Weekday Contest 001-005 Beta

posted:

The AtCoder Weekday Contest will be held for five consecutive days starting on February 9 (Monday), with each contest running for 90 minutes from 8:00 PM (JST). [AtCoder Weekday Contest 0001 Beta](https://atcoder.jp/contests/awc0001) [AtCoder Weekday Contest 0002 Beta](https://atcoder.jp/contests/awc0002) [AtCoder Weekday Contest 0003 Beta](https://atcoder.jp/contests/awc0003) [AtCoder Weekday Contest 0004 Beta](https://atcoder.jp/contests/awc0004) [AtCoder Weekday Contest 0005 Beta](https://atcoder.jp/contests/awc0005) - Start Times - AWC0001: [February 9, 2026 (Monday) 8:00 PM (JST)](https://www.timeanddate.com/worldclock/fixedtime.html?iso=20260209T2100&p1=248) - AWC0002: [February 10, 2026 (Tuesday) 8:00 PM (JST)](https://www.timeanddate.com/worldclock/fixedtime.html?iso=20260209T2100&p1=248) - AWC0003: [February 11, 2026 (Wednesday) 8:00 PM (JST)](https://www.timeanddate.com/worldclock/fixedtime.html?iso=20260209T2100&p1=248) - AWC0004: [February 12, 2026 (Thursday) 8:00 PM (JST)](https://www.timeanddate.com/worldclock/fixedtime.html?iso=20260209T2100&p1=248) - AWC0005: [February 13, 2026 (Friday) 8:00 PM (JST)](https://www.timeanddate.com/worldclock/fixedtime.html?iso=20260209T2100&p1=248) - Writer: <img src="//img.atcoder.jp/assets/icon/crown_bronze.png"> <a href="/user/chokudai" class="username">chokudai</a> - Rating Update Eligible: None - Scoring Range: 100~200 - 233~266 - 300~333 - 366~400 - 433~466 - The scoring scale has been set higher than usual, targeting participation from users ranked cyan or below.

last update: