Information

[How to get an account / participate in contests?](http://atcoder.jp/post/2) [AtCoder's Contest Format](http://atcoder.jp/post/1) [AtCoder's Testcases](https://www.dropbox.com/sh/arnpe0ef5wds8cv/AAAk_SECQ2Nc6SVGii3rHX6Fa?dl=0) - [AtCoder's Rating System](https://www.dropbox.com/sh/zpgcogxmmu84rr8/AADcw6o7M9tJFDgtpqEQQ46Ua?dl=0) - [AtCoder Race Ranking](https://docs.google.com/spreadsheets/d/1T-hKu_vIh8l4EiW6XTWOvP0evzsWj0f45JNNgou21Cc/edit#gid=695896678)

Announcement for beta version

We provide [beta version](https://beta.atcoder.jp/). Several functions has been added. Please try it!

AtCoder Beginner Contest 113 Announcement

posted:
<a href="https://beta.atcoder.jp/contests/abc113">AtCoder Beginner Contest 113</a> will be held. - Time (YY-MM-DD): <a href='http://www.timeanddate.com/worldclock/fixedtime.html?iso=20181104T2100&p1=248' target='blank'><time class='fixtime fixtime-full'>2018-11-04 21:00:00+0900</time></a> (JST) - Duration: 100 minutes - Number of Tasks: 4 - Rated range: ~ 1199 The point values will be 100-200-300-400. We are looking forward to your participation!

Tenka1 Programmer Contest / Tenka1 Programmer Beginner Contest Announcement

posted:
Two contests <a href="https://beta.atcoder.jp/contests/tenka1-2018">Tenka1 Programmer Contest</a> and <a href="https://beta.atcoder.jp/contests/tenka1-2018-beginner">Tenka1 Programmer Beginner Contest</a> will be held at the same time. You can participate in whichever contest you want. (However, you can't register to both competitions.) The last two tasks in Tenka1 Programmer Beginner Contest are the same as the first two tasks in Tenka1 Programmer Contest. - Time (YY-MM-DD): <a href='http://www.timeanddate.com/worldclock/fixedtime.html?iso=20181027T2100&p1=248' target='blank'><time class='fixtime fixtime-full'>2018-10-27 21:00:00+0900</time></a> (JST) - Duration: 10 minutes - Number of Tasks: 4 - writer:<img src='/public/img/icon/crown3200.gif'> <a href='/user/DEGwer' class='username'><span style='color:#8C0AB4;'>DEGwer</span></a> - Rated range: ~ 2799 for Tenka1 Programmer Contest, ~ 1199 for Tenka1 Programmer Beginner Contest The point values will be Tenka1 Programmer Contest: 400-500-700-900 Tenka1 Programmer Beginner Contest: 100-200-400-500 We are looking forward to your participation!

AtCoder Grand Contest 028 Announcement

posted:
[AtCoder Grand Contest 028](https://beta.atcoder.jp/contests/agc028) will be held on Saturday. This contest counts for GP30 scores. - Time: October 13th (Saturday), [21:00 JST](http://www.timeanddate.com/worldclock/fixedtime.html?iso=20181013T2100&p1=248) - Duration: 150 minutes - Number of Tasks: 6 - Writer: <a href='/user/maroonrk' class='username'><span style='color:#FF0000;'>maroonrk</span></a> - Rated: Yes We are looking forward to your participation! The point values will be announced later.

AtCoder Beginner Contest 112 announcement

posted:
[AtCoder Beginner Contest 112](https://beta.atcoder.jp/contests/abc112) will be held. - Time: October 6th (Saturday), [21:00 JST](http://www.timeanddate.com/worldclock/fixedtime.html?iso=20181006T2100&p1=248) - Duration: 100 minutes - Number of Tasks: 4 - Rated range: 0-1199 The point values are: 100 - 200 - 300 - 400 We are looking forward to your participation!

AtCoder Regular Contest 103 / Beginner Contest 111 Announcement

posted:
Two contests [AtCoder Regular Contest 103](https://beta.atcoder.jp/contests/arc103) and [AtCoder Beginner Contest 111](https://beta.atcoder.jp/contests/abc111) will be held at the same time. You can participate in whichever contest you want. (However, you can't register to both competitions.) The last two tasks in ABC are the same as the first two tasks in ARC. - Time: September 29th (Saturday), [21:00 JST](http://www.timeanddate.com/worldclock/fixedtime.html?iso=20180929T2100&p1=248) - Duration: 100 minutes - Number of Tasks: 4 - writer:<a href="/user/semiexp" class="username"><span class="user-red">semiexp</span></a>, <a href="/user/nuip" class="username"><span class="user-red">nuip</span></a> - Rating: 0-2799 for ARC, 0-1199 for ABC The point values will be announced later. We are looking forward to your participation!