Starting from [ARC189](https://atcoder.jp/contests/arc189), AtCoder Regular Contest will be split into two divisions based on difficulty: Div. 1 and Div. 2. - **AtCoder Regular Contest (Div. 1)** - Rated range: 1600 ~ 2799 - Approximate point values: 800-800-900-900-1000 - **AtCoder Regular Contest (Div. 2)** - Rated range: 1200 ~ 2399 - Approximate point values: 400-500-600-700-800 ### Special Notes - Only Div. 1 will allow the use of generative AI (it may be prohibited again depending on future circumstances) - We plan to hold Div. 1 at least 8 times per year and Div. 2 at least 12 times per year - The number of problems may vary (particularly, Div. 2 may have 6 problems) ### Objectives - Make Div. 1 focused on competition for yellow to orange users - Hold Div. 2 with easier problems and maintain contests that can be enjoyed by users across a wide range of ratings - Raise the lower difficulty threshold of Div. 1 to exclude it from generative AI rules ### Related Articles - [Restructuring of contests](https://atcoder.jp/posts/1281) - [Regarding Rule Changes in ABC and ARC Due to Technological Advancement of Generative AI](https://atcoder.jp/posts/1350)