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Two contests [AtCoder Regular Contest 058](https://arc058.contest.atcoder.jp/) and [AtCoder Beginner Contest 042](https://abc042.contest.atcoder.jp/) will be held on this Saturday 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. ABC is significantly easier than Div2 contest in TopCoder of Codeforces. If you can enjoy Div2 contests in TC or CF, I recommend you to participate in ARC. - Time： July 23rd (Saturday), [21:00 JST](http://www.timeanddate.com/worldclock/fixedtime.html?iso=20160723T2100&p1=248) - Duration: 100 minutes - Number of Tasks: 4 - Writer：<a href="/user/yosupo" class="username"><span class="user-yellow">yosupo</span></a>, <a href="/user/kyuridenamida" class="username"><span class="user-green">kyuridenamida</span></a> - Rating： ARC is rated for those who have rating < 2800. ABC is rated for those who have rating < 1200. (However, note that current rating is much lower than your actual strength - if you are green or brown, I recommend you to choose ARC.) The point values are: - ARC: 300 - 400 - 700 - 1500 - ABC: 100 - 200 - 300 - 400 You can check the relation between point values and difficulties [here](https://agc001.contest.atcoder.jp/). We are looking forward to your participation! **UPD:** Thank you for participation! **UPD:** Ratings are updated.
The first international contest, [AtCoder Grand Contest 001](https://agc001.contest.atcoder.jp/), will be held on Saturday. - Time: July 16th (Saturday), [21:00 JST](http://www.timeanddate.com/worldclock/fixedtime.html?iso=20160716T2100&p1=248) - Duration: <font color="red">110</font> minutes - Number of Tasks: 6 - Writer: <a href="/user/snuke" class="username"><span class="user-unrated">snuke</span></a> - Rated: Yes Each task is assigned a point value. For example, if you solve a 100-point problem correctly, you will get 100 points. Your solution will be judged soon after your submission (like ICPC). The contestants are ranked by the total scores. In case of tie, they are ranked by the penalties. The penalty is computed as (the time you spent to get current score) plus (5 minutes) * (the number of incorrect attempts). We are looking forward to your participation! The point values are 200, 500 (300 for partial task), 600, 1000, 1400, 2000. **UPD:** The editorial is uploaded. [editorial link](https://agc001.contest.atcoder.jp/data/agc/001/editorial.pdf) (English is at the bottom) **UPD:** Ratings are updated! **UPD:** The contest winners were: 1. <a href="/user/cgy4ever" class="username"><span class="user-red">cgy4ever</span></a> 2. <a href="/user/DEGwer" class="username"><span class="user-red">DEGwer</span></a> 3. <a href="/user/Um_nik" class="username"><span class="user-red">Um_nik</span></a> 4. <a href="/user/yosupo" class="username"><span class="user-orange">yosupo</span></a> 5. <a href="/user/jcvb" class="username"><span class="user-orange">jcvb</span></a> Congratulations! You can see the statistics [here](https://agc001.contest.atcoder.jp/statistics). In AGC 001, 949 coders participated from 53 countries. Here is the list of countries with at least 5 participants: - Japan: 703 - India: 83 - China: 33 - Russia: 23 - Bangladesh: 22 - Afghanistan: 13 - Iran: 12 - United States: 12 - Ukraine: 10 - Vietnam: 10 - Belarus: 8 - Poland: 7 - Taiwan: 7 - Egypt: 5
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Hello! I'm <a href="/user/rng_58" class="username"><span class="user-admin">rng_58</span></a>. I'm the contest manager in AtCoder. AtCoder is a programming contest website based in Japan. From this weekend, we will provide problem statements in both English and Japanese and AtCoder will be an international programming competition! There are three types of official contests in AtCoder: - AtCoder Grand Contest (AGC). This is our best contest. The problems will have high originality and require interesting observations. - AtCoder Regular Contest (ARC). The problems may be a bit typical compared to AGC problems, but still we think most of you can enjoy them and they are good for practice. - AtCoder Beginner Contest (ABC). This is mainly targeted for those who are new to competitive programming. The problems will be easy and educational. Usually, our contests will be held at 21:00 (JST) on Saturday. We are planning to hold AGC about twice a month, and in other weeks we will hold both ARC and ABC (you can choose in which contest to participate). We have a rating system and users will be colored according to their rating. There are eight colors in total (except for newcomers' black and admins' purple). Can you guess what colors are used? We hope you will enjoy AtCoder Contests!