Contest
Permanent Contests
| Contest Name |
|---|
| ◉ practice contest |
| ◉ AtCoder Library Practice Contest |
Upcoming Contests
| Start Time | Contest Name |
|---|---|
| ◉ AtCoder Beginner Contest 206（Sponsored by Panasonic） | |
| ◉ AtCoder Heuristic Contest 004 | |
| ◉ AtCoder Beginner Contest 207 | |
| ◉ AtCoder Grand Contest 054 |
Recent Contests
[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)
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.
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!
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!
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!
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!
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!