We will hold <a href="https://atcoder.jp/contests/arc161">AtCoder Regular Contest 161</a>. - Contest URL: https://atcoder.jp/contests/arc161 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20230528T2100&p1=248 - Duration: 120 minutes - Number of Tasks: 6 - Writer: <a href="/users/ygussany" class="username"><span class="user-orange">ygussany</span></a> - Tester: <img src="//img.atcoder.jp/assets/icon/crown_silver.png"> <a href="/users/tatyam" class="username"><span style="color:#FF6040;">tatyam</span></a>, <img src="//img.atcoder.jp/assets/icon/crown_bronze.png"> <a href="/users/potato167" class="username"><span class="user-red">potato167</span></a> - Rated range: ~ 2799 The point values will be 300-400-500-500-800-900. We are looking forward to your participation!

We will hold <a href="https://atcoder.jp/contests/abc303">NS Solutions Corporation Programming Contest 2023（AtCoder Beginner Contest 303）</a>. - Contest URL: https://atcoder.jp/contests/abc303 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20230527T2100&p1=248 - Duration: 100 minutes - Number of Tasks: 8 - Writer: <a href="/users/nok0" class="username"><span class="user-orange">nok0</span></a>, <a href="/users/m_99" class="username"><span class="user-orange">m_99</span></a>, <a href="/users/evima" class="username"><span class="user-unrated">evima</span></a> - Tester: <a href="/users/physics0523" class="username"><span class="user-orange">physics0523</span></a>, <a href="/users/yuto1115" class="username"><span class="user-red">yuto1115</span></a> - Rated range: ~ 1999 The point values will be 100-200-300-400-475-525-550-600. We are looking forward to your participation!

We will hold <a href="https://atcoder.jp/contests/agc062">AtCoder Grand Contest 062</a>. This contest counts for GP30 scores. - Contest URL: https://atcoder.jp/contests/agc062 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20230521T2100&p1=248 - Duration: 180 minutes - Number of Tasks: 6 - Writer: <a href="/users/chinerist" class="username"><span class="user-orange">chinerist</span></a> - Tester: <img src="//img.atcoder.jp/assets/icon/crown_bronze.png"> <a href="/users/maspy" class="username"><span class="user-red">maspy</span></a>, <a href="/users/IH19980412" class="username"><span class="user-red">IH19980412</span></a> - Rated range: 1200 ~ The point values will be 400-700-800-1100-1300-2000. We are looking forward to your participation!

We will hold <a href="https://atcoder.jp/contests/abc302">TOYOTA MOTOR CORPORATION Programming Contest 2023#2 (AtCoder Beginner Contest 302)</a>. - Contest URL: https://atcoder.jp/contests/abc302 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20230520T2100&p1=248 - Duration: 100 minutes - Number of Tasks: 8 - Writer: <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/PCTprobability" class="username"><span class="user-red">PCTprobability</span></a>, <a href="/users/Nyaan" class="username"><span class="user-red">Nyaan</span></a>, <a href="/users/ynymxiaolongbao" class="username"><span class="user-yellow">ynymxiaolongbao</span></a> - Tester: <a href="/users/MMNMM" class="username"><span class="user-orange">MMNMM</span></a>, <a href="/users/Nyaan" class="username"><span class="user-red">Nyaan</span></a> - Rated range: ~ 1999 The point values will be 100-250-250-400-425-500-625-625. We are looking forward to your participation!

We will hold <a href="https://atcoder.jp/contests/arc160">AtCoder Regular Contest 160</a>. - Contest URL: https://atcoder.jp/contests/arc160 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20230514T2100&p1=248 - Duration: 120 minutes - Number of Tasks: 6 - Writer: <img src="//img.atcoder.jp/assets/icon/crown_bronze.png"> <a href="/users/PCTprobability" class="username"><span class="user-red">PCTprobability</span></a>, <a href="/users/Nyaan" class="username"><span class="user-red">Nyaan</span></a> - Tester: <img src="//img.atcoder.jp/assets/icon/crown_bronze.png"> <a href="/users/potato167" class="username"><span class="user-red">potato167</span></a> - Rated range: ~ 2799 The point values will be 400-500-500-700-800-900. We are looking forward to your participation!

We will hold <a href="https://atcoder.jp/contests/abc301">パナソニックグループプログラミングコンテスト2023（AtCoder Beginner Contest 301）</a>. - Contest URL: https://atcoder.jp/contests/abc301 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20230513T2100&p1=248 - Duration: 100 minutes - Number of Tasks: 8 - Writer: <img src="//img.atcoder.jp/assets/icon/crown_bronze.png"> <a href="/users/yuto1115" class="username"><span class="user-red">yuto1115</span></a>, <a href="/users/kyopro_friends" class="username"><span class="user-orange">kyopro_friends</span></a>, <a href="/users/evima" class="username"><span class="user-unrated">evima</span></a>, <a href="/users/physics0523" class="username"><span class="user-orange">physics0523</span></a>, <a href="/users/Nyaan" class="username"><span class="user-red">Nyaan</span></a>, <a href="/users/m_99" class="username"><span class="user-orange">m_99</span></a> - Tester: <a href="/users/cn449" class="username"><span class="user-red">cn449</span></a>, <a href="/users/leaf1415" class="username"><span class="user-orange">leaf1415</span></a> - Rated range: ~ 1999 The point values will be 100-200-300-400-475-500-600-625. (Since this ABC, we adjust the point values depending on problems.) We are looking forward to your participation!

We will hold <a href="https://atcoder.jp/contests/abc300">ユニークビジョンプログラミングコンテスト2023 春 (AtCoder Beginner Contest 300)</a>. - Contest URL: https://atcoder.jp/contests/abc300 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20230429T2100&p1=248 - Duration: 100 minutes - Number of Tasks: 8 - Writer: <a href="/users/Nyaan" class="username"><span class="user-red">Nyaan</span></a>, <a href="/users/physics0523" class="username"><span class="user-orange">physics0523</span></a>, <a href="/users/evima" class="username"><span class="user-unrated">evima</span></a> - Tester: <a href="/users/nok0" class="username"><span class="user-orange">nok0</span></a>, <a href="/users/m_99" class="username"><span class="user-orange">m_99</span></a> - Rated range: ~ 1999 The point values will be 100-200-300-400-500-500-600-600. We are looking forward to your participation!

Currently, some kind of attack may make it difficult to access the contest site. We will take the following three countermeasures. This will make it harder for the contest site to become unrated even if it is down, so please continue to participate in the contest even if it is difficult to connect. ### Printable problem statement page Although we are taking countermeasures against attacks, we anticipate that the connection to the contest site will be unstable. After the contest has started, you can check the problem statements even if you have difficulty accessing them by opening the "Tasks for printing" page at the bottom of the problem list. ### Extension of contest time If you are unable to connect to the contest site, we will extend the contest time by about half of the server down time, up to by 20 minutes.

This contest has been postponed by AtCoder in order to implement measures against DDoS attacks. It is not canceled. We will inform you officially of the rescheduled date as soon as it is confirmed. The temporary measure of setting the contest start time to April 23, 2024 is due to the postponement and is not a final decision. In order to provide our users with a reliable service in the future, please allow us time to investigate and implement countermeasures against the attack. We kindly ask for your understanding and cooperation.

We will hold <a href="https://atcoder.jp/contests/ahc020">ALGO ARTIS Programming Contest 2023（AtCoder Heuristic Contest 020）</a>. - Contest URL: https://atcoder.jp/contests/ahc020 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20230423T1500&p1=248 - Duration: 4 hours - Writer: <img src="//img.atcoder.jp/assets/icon/crown_gold.png"><a href="https://atcoder.jp/users/terry_u16?contestType=heuristic" class="username"><span class="user-red">terry_u16</span></a> - Rated range: All (Heuristic Rating) The goal of AHC is to create a better solution to a problem for which it is difficult to find the optimal solution. We are looking forward to your participation!