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 Regular Contest 099 / Beginner Contest 101 Announcement

posted:
Two contests [AtCoder Regular Contest 099](https://beta.atcoder.jp/contests/arc099) and [AtCoder Beginner Contest 101](https://beta.atcoder.jp/contests/abc101) 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:June 23rd (Saturday), [21:00 JST](http://www.timeanddate.com/worldclock/fixedtime.html?iso=20180623T2100&p1=248) - Duration: 100 minutes - Number of Tasks: 4 - writer:<a href="/user/semiexp" class="username"><span class="user-red">semiexp</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!

AtCoder Beginner Contest 100 announcement

posted:
[AtCoder Beginner Contest 100](https://abc100.contest.atcoder.jp/) will be held. - Time: June 16th (Saturday), [21:00 JST](http://www.timeanddate.com/worldclock/fixedtime.html?iso=20180616T2100&p1=248) - Duration: 100 minutes - Number of Tasks: 4 - writer:<a href="/user/e869120" class="username"><span class="user-red">e869120</span></a>, <a href="/user/square1001" class="username"><span class="user-orange">square1001</span></a> - Rating: 0-1199 The point values are: 100 - 200 - 300 - 400 We are looking forward to your participation!

AtCoder Beginner Contest 099 announcement

posted:
[AtCoder Beginner Contest 099](https://abc099.contest.atcoder.jp/) will be held. - Time: June 10th (Sunday), [21:00 JST](http://www.timeanddate.com/worldclock/fixedtime.html?iso=20180610T2100&p1=248) - Duration: 100 minutes - Number of Tasks: 4 - writer:<a href="/user/namonakiacc" class="username">namonakiacc</span></a> - Rating: 0-1199 The point values are: 100 - 200 - 300 - 400 We are looking forward to your participation!

AtCoder Grand Contest 025 Announcement

posted:
[AtCoder Grand Contest 025](https://agc025.contest.atcoder.jp/) will be held on Sunday. This contest counts for GP30 scores. - Time: June 3rd (Sunday), [21:00 JST](http://www.timeanddate.com/worldclock/fixedtime.html?iso=20180603T2100&p1=248) - Duration: TBD (around 2 hours) - Number of Tasks: 6 - Writer: <a href="/user/yutaka1999" class="username"><span class="user-red">yutaka1999</span></a> - Rated: Yes We are looking forward to your participation! The point values will be announced later.

AtCoder Regular Contest 098 / Beginner Contest 098 Announcement

posted:
Two contests [AtCoder Regular Contest 098](https://arc098.contest.atcoder.jp/) and [AtCoder Beginner Contest 098](https://abc098.contest.atcoder.jp/) 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:May 26th (Saturday), [21:00 JST](http://www.timeanddate.com/worldclock/fixedtime.html?iso=20180526T2100&p1=248) - Duration: 100 minutes - Number of Tasks: 4 - writer:<a href="/user/maroonrk" class="username"><span class="user-red">maroonrk</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!