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[How to get an account / participate in contests?](http://atcoder.jp/posts/2) [AtCoder's Contest Format](http://atcoder.jp/posts/1) [AtCoder's Testcases](https://www.dropbox.com/sh/nx3tnilzqz7df8a/AAAYlTq2tiEHl5hsESw6-yfLa?dl=0) - [AtCoder's Rating System](https://www.dropbox.com/sh/zpgcogxmmu84rr8/AADcw6o7M9tJFDgtpqEQQ46Ua?dl=0) - [AtCoder Race Ranking](https://img.atcoder.jp/file/GP30.html)

AtCoder Beginner Contest 223 Announcement

posted:
We will hold <a href="https://atcoder.jp/contests/abc223">AtCoder Beginner Contest 223</a>. - Contest URL: https://atcoder.jp/contests/abc223 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20211017T2100&p1=248 - Duration: 100 minutes - Number of Tasks: 8 - Writer: <a href="/users/blackyuki" class="username"><span class="user-red">blackyuki</span></a>, <a href="/users/KoD" class="username"><span class="user-orange">KoD</span></a>, <a href="/users/leaf1415" class="username"><span class="user-orange">leaf1415</span></a>, <a href="/users/physics0523" class="username"><span class="user-orange">physics0523</span></a>, <a href="/users/ynymxiaolongbao" class="username"><span class="user-orange">ynymxiaolongbao</span></a> - Tester: <a href="/users/mechanicalpenciI" class="username"><span class="user-orange">mechanicalpenciI</span></a>, <a href="/users/penguinman" class="username"><span class="user-orange">penguinman</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!

Daiwa Securities Co. Ltd. Programming Contest 2021(AtCoder Regular Contest 128) Announcement

posted:
We will hold <a href="https://atcoder.jp/contests/arc128">Daiwa Securities Co. Ltd. Programming Contest 2021(AtCoder Regular Contest 128)</a>. - Contest URL: https://atcoder.jp/contests/arc128 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20211016T2100&p1=248 - Duration: 120 minutes - Number of Tasks: 6 - Writer: <img src="//img.atcoder.jp/assets/icon/crown_silver.png"> <a href="/users/maroonrk" class="username"><span style="color:#869120;">maroonrk</span></a> - Tester: <a href="/users/maspy" class="username"><span class="user-red">maspy</span></a>, <a href="/users/yamunaku" class="username"><span class="user-orange">yamunaku</span></a> - Rated range: ~ 2799 The point values will be 400-400-600-700-800-1000. We are looking forward to your participation!

Exawizards Programming Contest 2021(AtCoder Beginner Contest 222) Announcement

posted:
We will hold <a href="https://atcoder.jp/contests/abc222">Exawizards Programming Contest 2021(AtCoder Beginner Contest 222)</a>. - Contest URL: https://atcoder.jp/contests/abc222 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20211009T2100&p1=248 - Duration: 100 minutes - Number of Tasks: 8 - Writer: <a href="/users/kyopro_friends" class="username"><span class="user-orange">kyopro_friends</span></a>, <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> - Tester: <a href="/users/sugarrr" class="username"><span class="user-orange">sugarrr</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!

AtCoder Beginner Contest 221 Announcement

posted:
We will hold <a href="https://atcoder.jp/contests/abc221">AtCoder Beginner Contest 221</a>. - Contest URL: https://atcoder.jp/contests/abc221 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20211002T2100&p1=248 - Duration: 100 minutes - Number of Tasks: 8 - Writer:<img src="//img.atcoder.jp/assets/icon/crown_bronze.png"> <a href="/users/chokudai" class="username"><span class="user-red">chokudai</span></a>, <img src="//img.atcoder.jp/assets/icon/crown_bronze.png"> <a href="/users/E869120" class="username"><span class="user-red">E869120</span></a>, <a href="/users/KoD" class="username"><span class="user-orange">KoD</span></a>, <a href="/users/leaf1415" class="username"><span class="user-orange">leaf1415</span></a>, <a href="/users/mechanicalpenciI" class="username"><span class="user-orange">mechanicalpenciI</span></a>, <a href="/users/Nyaan" class="username"><span class="user-red">Nyaan</span></a>, <a href="/users/penguinman" class="username"><a href="/user/square1001" class="username"><span class="user-orange">square1001</span></a>,<span class="user-orange">penguinman</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!

AtCoder Beginner Contest 220 Announcement

posted:
We will hold <a href="https://atcoder.jp/contests/abc220">AtCoder Beginner Contest 220</a>. - Contest URL: https://atcoder.jp/contests/abc220 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20210926T2100&p1=248 - Duration: 100 minutes - Number of Tasks: 8 - Writer: <a href="/users/blackyuki" class="username"><span class="user-red">blackyuki</span></a>, <a href="/users/kyopro_friends" class="username"><span class="user-orange">kyopro_friends</span></a>, <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/QCFium" class="username"><span class="user-red">QCFium</span></a>, <a href="/users/sugarrr" class="username"><span class="user-orange">sugarrr</span></a>, <a href="/users/ynymxiaolongbao" class="username"><span class="user-orange">ynymxiaolongbao</span></a> - Rated range: ~ 1999 The point values will be 100-200-300-400-500-500-600-600. We are looking forward to your participation!

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