Two contests [AtCoder Regular Contest 089](https://arc089.contest.atcoder.jp/) and [AtCoder Beginner Contest 086](https://abc086.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： January 21st (Sunday), [21:00 JST](http://www.timeanddate.com/worldclock/fixedtime.html?iso=20180121T2100&p1=248) - Duration: 100 minutes - Number of Tasks: 4 - writer：<a href="/user/sigma425" class="username"><span class="user-red">sigma425</span></a> - Rating： 0-2799 for ARC, 0-1199 for ABC The point values will be ABC: 100 - 200 - 300 - 500 ARC: 300 - 500 - 900 - 1100 We are looking forward to your participation!