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AtCoder Grand Contest 005 Announcement

posted:
[AtCoder Grand Contest 005](https://agc005.contest.atcoder.jp/) will be held on Saturday. - Time: October 1st (Saturday), [21:00 JST](http://www.timeanddate.com/worldclock/fixedtime.html?iso=20161001T2100&p1=248) - Duration: 110 minutes - Number of Tasks: 6 - Writer: <a href="/user/yosupo" class="username"><span class="user-red">yosupo</span></a> - Rated: Yes We are looking forward to your participation! The point values are 300(200), 400, 700, 900, 1400, 1900.

CODE FESTIVAL 2016 Qualification Round A Announcement

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[CODE FESTIVAL 2016 Qualification Round A](https://code-festival-2016-quala.contest.atcoder.jp/) will be held on Saturday. - <font color="#FF0000">Time: September 24th (Sunday), [21:00 JST](http://www.timeanddate.com/worldclock/fixedtime.html?iso=20160924T2100&p1=248)</font> - Duration: 120 minutes - Number of Tasks: 5 - Writer: <a href="/user/sugim48" class="username"><span class="user-orange">sugim48</span></a> - Rated: Yes If you are eligible for the onsite contest, please don't forget to register at http://r.recruit-jinji.jp/code_fes/us/index.html. This website also contains various information about the tournament. The top 10 non-Japanese students will qualify for the onsite finals. We are looking forward to your participation! The point values are 100, 200, 400, 800, 1200.

AtCoder Regular Contest 061 / Beginner Contest 045 Announcement

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Two contests [AtCoder Regular Contest 061](https://arc061.contest.atcoder.jp/) and [AtCoder Beginner Contest 045](https://abc045.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. - Time: September 11th (Sunday), [21:00 JST](http://www.timeanddate.com/worldclock/fixedtime.html?iso=20160911T2100&p1=248) - Duration: 100 minutes - Number of Tasks: 4 - writer:<a href="/user/tozangezan" class="username"><span class="user-orange">tozangezan</span></a> - Rating: 0-2799 for ARC, 0-1199 for ABC The point values are: - ARC: 300 - 400 - 600 - 1100(500) - ABC: 100 - 200 - 300 - 400 We are looking forward to your participation!

AtCoder Grand Contest 004 Announcement

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[AtCoder Grand Contest 004](https://agc004.contest.atcoder.jp/) will be held on Saturday. <font color="#FF0000">Note: The contest was moved to Sunday in order to avoid collision with TCO Russia.</font> - <font color="#FF0000">Time: September 4th (Sunday), [21:00 JST](http://www.timeanddate.com/worldclock/fixedtime.html?iso=20160904T2100&p1=248)</font> - Duration: 110 minutes - Number of Tasks: 6 - Writer: <a href="/user/sugim48" class="username"><span class="user-orange">sugim48</span></a> - Rated: Yes We are looking forward to your participation! The point values are 200, 400, 700, 800, 1400, 2200 (1500).

AtCoder Regular Contest 060 / Beginner Contest 044 Announcement

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Two contests [AtCoder Regular Contest 060](https://arc060.contest.atcoder.jp/) and [AtCoder Beginner Contest 044](https://abc044.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. - Time: August 28th (Sunday), [21:00 JST](http://www.timeanddate.com/worldclock/fixedtime.html?iso=20160828T2100&p1=248) - Duration: 100 minutes - Number of Tasks: 4 - Writer:<a href="/user/climpet" class="username"><span class="user-cyan">climpet</span></a> - Rating: 0-2799 for ARC, 0-1199 for ABC The point values are: - ARC: 300(200)-500-700(200)-900(400) - ABC: 100-200-300(200)-500 We are looking forward to your participation!

AtCoder Grand Contest 003 Announcement

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[AtCoder Grand Contest 003](https://agc003.contest.atcoder.jp/) will be held on Sunday. - Time: August 21st (Sunday), [21:00 JST](http://www.timeanddate.com/worldclock/fixedtime.html?iso=20160821T2100&p1=248) - Duration: 110 minutes - Number of Tasks: 6 - Writer: <a href="/user/DEGwer" class="username"><span class="user-orange">DEGwer</span></a> - Rated: Yes We are looking forward to your participation! The point values are 200, 400, 600, 1100, 1400, 1700.

AtCoder Regular Contest 059 / Beginner Contest 043 Announcement

posted:
Two contests [AtCoder Regular Contest 059](https://arc059.contest.atcoder.jp/) and [AtCoder Beginner Contest 043](https://abc043.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. - Time: August 13th (Saturday), [21:00 JST](http://www.timeanddate.com/worldclock/fixedtime.html?iso=20160813T2100&p1=248) - Duration: 100 minutes - Number of Tasks: 4 - Writer:<a href="/user/sigma425" class="username"><span class="user-blue">sigma425</span></a>, <a href="/user/evima" class="username"><span class="user-unrated">evima</span></a> - Rating: 0-2799 for ARC, 0-1199 for ABC The point values are: - ARC: 200 - 400 (200) - 800 (400) - 800 (400) - ABC: 100 - 200 - 200 - 400 (200) We are looking forward to your participation!

AGC003 was Rescheduled

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AGC003 was moved to 21st, Sunday (to avoid collision with other contests).

AtCoder Grand Contest 002 Announcement

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[AtCoder Grand Contest 002](https://agc002.contest.atcoder.jp/) will be held on Sunday. - Time: July 31st (Sunday), [21:00 JST](http://www.timeanddate.com/worldclock/fixedtime.html?iso=20160731T2100&p1=248) - Duration: <font color="red">110</font> minutes - Number of Tasks: 6 - Writer: <a href="/user/sugim48" class="username"><span class="user-yellow">sugim48</span></a> - Rated: Yes We are looking forward to your participation! The point values are 200 (100), 400, 500, 1000, 1400, 1600.

AtCoder Rating System

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The ratings were updated last Sunday, but it turned out that in the old rating system the ratings changed too much in a single contest. We changed the rating formula to fix this issue, and now the rating is calculated based on the new system. In AtCoder, when you participate in only a few contests your rating is much lower than your actual strength (so don't worry even if your current rating is very low). You need to participate in at least 10 contests in order to get accurate rating. We will publish the rating formula in the near future. Here is the table of colors: |Rating|Color| |:--:|:--:| |3600-3999|???| |3200-3599|???| |2800-3199|<span class="user-red">Red</span>| |2400-2799|<span class="user-orange">Orange</span>| |2000-2399|<span class="user-yellow">Yellow</span>| |1600-1999|<span class="user-blue">Blue</span>| |1200-1599|<span class="user-cyan">Cyan</span>| |800-1199|<span class="user-green">Green</span>| |400-799|<span class="user-brown">Brown</span>| |0-399|<span class="user-gray">Gray</span>|