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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 Regular Contest 126 Announcement

posted:
We will hold <a href="https://atcoder.jp/contests/arc126">AtCoder Regular Contest 126</a>. **Please note the unusual start time (1 hour later than usual).** - Contest URL: https://atcoder.jp/contests/arc126 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20210919T2200&p1=248 - Duration: 120 minutes - Number of Tasks: 6 - Writer: <a href="/users/maspy" class="username"><span class="user-red">maspy</span></a> - Tester: <a href="/users/satashun" class="username"><span class="user-red">satashun</span></a>, <a href="/users/tempura0224" class="username"><span class="user-red">tempura0224</span></a> - Rated range: ~ 2799 The point values will be 300-400-600-600-800-1100. We are looking forward to your participation!

Sciseed Programming Contest 2021(AtCoder Beginner Contest 219) Announcement

posted:
We will hold <a href="https://atcoder.jp/contests/abc219">Sciseed Programming Contest 2021(AtCoder Beginner Contest 219)</a>. - Contest URL: https://atcoder.jp/contests/abc219 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20210918T2100&p1=248 - Duration: 100 minutes - Number of Tasks: 8 - Writer: <a href="/users/KoD" class="username"><span class="user-orange">KoD</span></a>, <a href="/users/kyopro_friends" class="username"><span class="user-orange">kyopro_friends</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/physics0523" class="username"><span class="user-orange">physics0523</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 218 Announcement

posted:
We will hold <a href="https://atcoder.jp/contests/abc218">AtCoder Beginner Contest 218</a>. - Contest URL: https://atcoder.jp/contests/abc218 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20210911T2100&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/physics0523" class="username"><span class="user-orange">physics0523</span></a>, <a href="/users/sugim48" class="username"><span style="color:#C06000;">sugim48</span></a> - Tester: <a href="/users/penguinman" class="username"><span class="user-orange">penguinman</span></a>, <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 217 Announcement

posted:
We will hold <a href="https://atcoder.jp/contests/abc217">AtCoder Beginner Contest 217</a>. - Contest URL: https://atcoder.jp/contests/abc217 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20210904T2100&p1=248 - Duration: 100 minutes - Number of Tasks: 8 - Writer:<a href="/user/kyopro_friends" class="username"><span class="user-orange">kyopro_friends</span></a>, <a href="/user/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/physics0523" class="username"><span class="user-orange">physics0523</span></a>, <a href="/users/sheyasutaka" class="username"><span class="user-orange">sheyasutaka</span></a> - Tester: <a href="/users/leaf1415" class="username"><span class="user-orange">leaf1415</span></a>, <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 216 Announcement

posted:
We will hold <a href="https://atcoder.jp/contests/abc216">AtCoder Beginner Contest 216</a>. - Contest URL: https://atcoder.jp/contests/abc216 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20210829T2100&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/penguinman" class="username"><span class="user-orange">penguinman</span></a>, <a href="/users/sugarrr" class="username"><span class="user-orange">sugarrr</span></a> - Tester: <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> - 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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