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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)

Maintenance notification

Dear users, We are going to suspend our service on the following schedule for maintenance. 【Schedule】 - Start time: Mon, July 19, 2021 14:00(UTC) - End time: Mon, July 19, 2021 20:00(UTC) 【Affected Resource】 - [https://atcoder.jp](https://atcoder.jp) We apologize for the inconvenience to our users. Thank you for your understanding.

AtCoder Beginner Contest 205 Announcement

posted:
We will hold <a href="https://atcoder.jp/contests/abc205">AtCoder Beginner Contest 205</a>. - Contest URL: https://atcoder.jp/contests/abc205 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20210613T2100&p1=248 - Duration: 100 minutes - Number of Tasks: 6 - Writer: <img src="//img.atcoder.jp/assets/icon/crown_bronze.png"> <a href="/users/chokudai" class="username"><span class="user-red">chokudai</span></a>, <a href="/users/kyopro_friends" class="username"><span class="user-orange">kyopro_friends</span></a>, <a href="/users/KoD" class="username"><span class="user-orange">KoD</span></a>, <img src="//img.atcoder.jp/assets/icon/crown_bronze.png"> <a href="/users/tozangezan" class="username"><span class="user-red">tozangezan</span></a> - Tester: <a href="/users/penguinman" class="username"><span class="user-orange">penguinman</span></a>, <a href="/users/tatyam" class="username"><span class="user-red">tatyam</span></a> - Rated range: ~ 1999 The point values will be 100-200-300-400-500-600. We are looking forward to your participation!

Tokio Marine & Nichido Fire Insurance Programming Contest 2021(AtCoder Regular Contest 122) Announcement

posted:
We will hold <a href="https://atcoder.jp/contests/arc122">Tokio Marine & Nichido Fire Insurance Programming Contest 2021(AtCoder Regular Contest 122)</a>. - Contest URL: https://atcoder.jp/contests/arc122 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20210612T2100&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: <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/yamunaku" class="username"><span class="user-orange">yamunaku</span></a> - Rated range: ~ 2799 The point values will be 400-500-600-700-800-1200. We are looking forward to your participation!

AtCoder Beginner Contest 204 Announcement

posted:
We will hold <a href="https://atcoder.jp/contests/ABC204">AtCoder Beginner Contest 204</a>. - Contest URL: https://atcoder.jp/contests/ABC204 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20210606T2100&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> - Rated range: ~ 1999 The point values will be 100-200-300-400-500-600. We are looking forward to your participation!

AtCoder Beginner Contest 203(Sponsored by Panasonic) Announcement

posted:
We will hold <a href="https://atcoder.jp/contests/abc203">AtCoder Beginner Contest 203(Sponsored by Panasonic)</a>. - Contest URL: https://atcoder.jp/contests/abc203 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20210530T2100&p1=248 - Duration: 100 minutes - Number of Tasks: 6 - Writer: <a href="/users/mechanicalpenciI" class="username"><span class="user-orange">mechanicalpenciI</span></a> - Tester: <a href="/users/penguinman" class="username"><span class="user-orange">penguinman</span></a> - Rated range: ~ 1999 The point values will be 100-200-300-400-500-600. We are looking forward to your participation!

NOMURA Programming Contest 2021(AtCoder Regular Contest 121) Announcement

posted:
We will hold <a href="https://atcoder.jp/contests/arc121">NOMURA Programming Contest 2021(AtCoder Regular Contest 121)</a>. - Contest URL: https://atcoder.jp/contests/arc121 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20210529T2100&p1=248 - Duration: 120 minutes - Number of Tasks: 6 - Writer: <a href="/users/camypaper" class="username"><span class="user-orange">camypaper</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/yamunaku" class="username"><span class="user-orange">yamunaku</span></a> - Rated range: ~ 2799 The point values will be 400-500-500-700-700-800. We are looking forward to your participation!

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