We will publish AtCoder Library (ACL). This is a collection of implementation of various algorithms written by us. You can use it on most of our contests. https://img.atcoder.jp/practice2/ac-library.zip Please refer to the document inside the zip file for details. Also, please try to use it in the following practice contest: https://atcoder.jp/contests/practice2 We will hold two contests on 20th and 26th, September, to celebrate this: - https://atcoder.jp/contests/acl1 - https://atcoder.jp/contests/acl2 Many problems (but not necessarily all) in these contests will be related to ACL.

We will hold <a href="https://atcoder.jp/contests/abc177">AtCoder Beginner Contest 177</a>. - Contest URL: https://atcoder.jp/contests/abc177 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20200829T2100&p1=248 - Duration: 100 minutes - Number of Tasks: 6 - Writer: <a href="/users/kyopro_friends" class="username"><span class="user-orange">kyopro_friends</span></a>, <a href="/users/ynymxiaolongbao" class="username"><span class="user-orange">ynymxiaolongbao</span></a> - Rated range: ~ 1999 The point values will be 100-200-300-400-500-600. We are looking forward to your participation!

We will hold <a href="https://atcoder.jp/contests/abc176">AtCoder Beginner Contest 176</a>. - Contest URL: https://atcoder.jp/contests/abc176 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20200822T2100&p1=248 - Duration: 100 minutes - Number of Tasks: 6 - Writer: <a href="/users/kort0n" class="username"><span class="user-orange">kort0n</span></a>, <a href="/users/kyopro_friends" class="username"><span class="user-orange">kyopro_friends</span></a>, <a href="/users/ynymxiaolongbao" class="username"><span class="user-orange">ynymxiaolongbao</span></a> - Rated range: ~ 1999 The point values will be 100-200-300-400-500-600. We are looking forward to your participation!

We will hold <a href="https://atcoder.jp/contests/abc175">AtCoder Beginner Contest 175</a>. - Contest URL: https://atcoder.jp/contests/abc175 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20200815T2100&p1=248 - Duration: 100 minutes - Number of Tasks: 6 - Writer: <a href="/users/satashun" class="username"><span class="user-orange">satashun</span></a> - Rated range: ~ 1999 The point values will be 100-200-300-400-500-600. We are looking forward to your participation!

We will hold <a href="https://atcoder.jp/contests/agc047">AtCoder Grand Contest 047</a>. This contest counts for GP30 scores. - Contest URL: https://atcoder.jp/contests/agc047 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20200809T2100&p1=248 - Duration: 140 minutes - Number of Tasks: 6 - Writer: <a href="/users/Errichto" class="username"><span class="user-red">Errichto</span></a> - Rated range: 1200 ~ The point values will be 300 - 700 - 800 - 1000 - 1800 (800) - 2200. We are looking forward to your participation!

We will hold <a href="https://atcoder.jp/contests/abc174">AtCoder Beginner Contest 174</a>. - Contest URL: https://atcoder.jp/contests/abc174 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20200802T2100&p1=248 - Duration: 100 minutes - Number of Tasks: 6 - Writer: <a href="/users/evima" class="username"><span class="user-unrated">evima</span></a>, <a href="/users/kyopro_friends" class="username"><span class="user-orange">kyopro_friends</span></a>, <a href="/users/ynymxiaolongbao" class="username"><span class="user-orange">ynymxiaolongbao</span></a> - Rated range: ~ 1999 The point values will be 100-200-300-400-500-600. We are looking forward to your participation!

We will hold <a href="https://atcoder.jp/contests/m-solutions2020">M-SOLUTIONS Programming Contest 2020</a>. - Contest URL: https://atcoder.jp/contests/m-solutions2020 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20200725T2100&p1=248 - Duration: 100 minutes - Number of Tasks: 6 - Writer: <a href="/users/E869120" class="username"><span class="user-red">E869120</span></a>, <a href="/users/square1001" class="username"><span class="user-orange">square1001</span></a> - Rated range: ~ 1999 The point values will be 100-200-300-400-500-600. We are looking forward to your participation!

We will hold <a href="https://atcoder.jp/contests/aising2020">AIsing Programming Contest 2020</a>. - Contest URL: https://atcoder.jp/contests/aising2020 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20200711T2100&p1=248 - Duration: 100 minutes - Number of Tasks: 6 - Writer: <a href="/users/camypaper" class="username"><span class="user-orange">camypaper</span></a> - Rated range: ~ 1999 The point values will be 100-200-300-400-500-600. We are looking forward to your participation!

We will hold <a href="https://atcoder.jp/contests/abc173">AtCoder Beginner Contest 173</a>. - Contest URL: https://atcoder.jp/contests/abc173 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20200705T2100&p1=248 - Duration: 100 minutes - Number of Tasks: 6 - Writer: <a href="/users/evima" class="username"><span class="user-unrated">evima</span></a>, <a href="/users/gazelle" class="username"><span class="user-orange">gazelle</span></a>, <a href="/users/kyopro_friends" class="username"><span class="user-orange">kyopro_friends</span></a>, <a href="/users/sheyasutaka" class="username"><span class="user-orange">sheyasutaka</span></a>, <a href="/users/ynymxiaolongbao" class="username"><span class="user-orange">ynymxiaolongbao</span></a> - Rated range: ~ 1999 The point values will be 100-200-300-400-500-600. We are looking forward to your participation!

We will hold <a href="https://atcoder.jp/contests/abc172">AtCoder Beginner Contest 172</a>. - Contest URL: https://atcoder.jp/contests/abc172 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20200627T2100&p1=248 - Duration: 100 minutes - Number of Tasks: 6 - Writer: <a href="/users/beet" class="username"><span class="user-orange">beet</span></a>, <a href="/users/evima" class="username"><span class="user-unrated">evima</span></a>, <a href="/users/kyopro_friends" class="username"><span class="user-orange">kyopro_friends</span></a>, <a href="/users/tozangezan" class="username"><span class="user-red">tozangezan</span></a>, <a href="/users/sheyasutaka" class="username"><span class="user-orange">sheyasutaka</span></a>, <a href="/users/ynymxiaolongbao" class="username"><span class="user-orange">ynymxiaolongbao</span></a> - Rated range: ~ 1999 The point values will be 100-200-300-400-500-600. We are looking forward to your participation!