atcoder_official's blog

By atcoder_official, history, 42 hours ago, In English

We will hold AtCoder Regular Contest 189 (Div. 2).

The point values will be 400-500-600-700-800.

We are looking forward to your participation!

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By atcoder_official, history, 3 days ago, In English

We will hold Daiwa Securities Co. Ltd. Programming Contest 2024(AtCoder Beginner Contest 383).

We are looking forward to your participation!

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By atcoder_official, history, 10 days ago, In English

We will hold AtCoder Beginner Contest 382.

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By atcoder_official, history, 10 days ago, In English

We will hold HACK TO THE FUTURE 2025 (AtCoder Heuristic Contest 040).

AtCoder Heuristic Contest (AHC) is a series of programming contests held regularly on AtCoder. Unlike algorithm contests such as ABC/ARC/AGC, the goal is to create a better solution to a problem for which it is difficult to find the optimal solution. We will hold a long-term contest with a duration of more than a week and a short-term contest with a duration of less than a day, roughly alternately about once a month.

This is the last qualifying contest for AtCoder World Tour Finals 2025 to crown the world champion of AtCoder players. Please refer to this post for more details.

After the contest ends, all participants can post their approach on the Editorial tab. Please share your approach.

We are looking forward to your participation!

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By atcoder_official, history, 2 weeks ago, In English

We will hold estie Programming Contest 2024 (AtCoder Regular Contest 188).

The point values will be 500-600-700-1000-1000.

We are looking forward to your participation!

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By atcoder_official, history, 2 weeks ago, In English

We will hold AtCoder Beginner Contest 381.

We are looking forward to your participation!

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By atcoder_official, history, 3 weeks ago, In English

We will hold AtCoder Regular Contest 187.

The point values will be 600-600-800-900-1000.

Please note that the new generative AI rules will be applied for also ARC from this ARC.

We are looking forward to your participation!

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By atcoder_official, history, 3 weeks ago, In English

We will hold AtCoder Beginner Contest 380.

Please note that new generative AI rules will be applied from this ABC.

We are looking forward to your participation!

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By atcoder_official, history, 4 weeks ago, In English

We will hold THIRD PROGRAMMING CONTEST 2024(AtCoder Heuristic Contest 039).

AtCoder Heuristic Contest (AHC) is a series of programming contests held regularly on AtCoder. Unlike algorithm contests such as ABC/ARC/AGC, the goal is to create a better solution to a problem for which it is difficult to find the optimal solution. We will hold a long-term contest with a duration of more than a week and a short-term contest with a duration of less than a day, roughly alternately about once a month.

This contest is one of the qualifying contests for AtCoder World Tour Finals 2025 to crown the world champion of AtCoder players. Please refer to this post for more details.

After the contest ends, all participants can post their approach on the Editorial tab. Please share your approach.

We are looking forward to your participation!

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By atcoder_official, history, 5 weeks ago, In English

We will hold Toyota Programming Contest 2024#11(AtCoder Beginner Contest 379).

We are looking forward to your participation!

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By atcoder_official, history, 5 weeks ago, In English

We will hold AtCoder Beginner Contest 378.

We are looking forward to your participation!

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By atcoder_official, history, 6 weeks ago, In English

We will hold AtCoder Regular Contest 186.

The point values will be 800-900-900-900-1000 900-900-900-900-1000.

Note: This ARC also serves as a qualification round to select the 18 contestants for the Japanese national finals, making it significantly more difficult than a regular ARC. (For reference, the difficulty is close to that of ARC184.)

Due to circumstances, we replaced the tasks and changed the point values. Since there are no easy tasks, the difficulty level of solving one or more tasks has increased. Please be careful. Since the difficulty level is flat, we recommend reading all the tasks and not necessarily solving them in order.

We are looking forward to your participation!

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By atcoder_official, history, 6 weeks ago, In English

We will hold TOYOTA SYSTEMS Programming Contest 2024(AtCoder Beginner Contest 377).

We are looking forward to your participation!

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By atcoder_official, history, 7 weeks ago, In English

We will hold AtCoder Beginner Contest 376.

We are looking forward to your participation!

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By atcoder_official, history, 2 months ago, In English

We will hold AtCoder Regular Contest 185.

The point values will be 600-600-600-800-800.

We are looking forward to your participation!

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By atcoder_official, history, 2 months ago, In English

We will hold Panasonic Programming Contest 2024(AtCoder Beginner Contest 375).

We are looking forward to your participation!

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By atcoder_official, history, 2 months ago, In English

We will hold KEYENCE Programming Contest 2024(AtCoder Beginner Contest 374).

We are looking forward to your participation!

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By atcoder_official, history, 2 months ago, In English

We will hold Toyota Programming Contest 2024#10(AtCoder Heuristic Contest 038).

AtCoder Heuristic Contest (AHC) is a series of programming contests held regularly on AtCoder. Unlike algorithm contests such as ABC/ARC/AGC, the goal is to create a better solution to a problem for which it is difficult to find the optimal solution. We will hold a long-term contest with a duration of more than a week and a short-term contest with a duration of less than a day, roughly alternately about once a month.

This contest is one of the qualifying contests for AtCoder World Tour Finals 2025 to crown the world champion of AtCoder players. Please refer to this post for more details.

After the contest ends, all participants can post their approach on the Editorial tab. Please share your approach.

We are looking forward to your participation!

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By atcoder_official, history, 2 months ago, In English

We will hold AtCoder Beginner Contest 373.

We are looking forward to your participation!

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By atcoder_official, history, 3 months ago, In English

We will hold AtCoder Regular Contest 184.

The point values will be 600-700-900-1000-1000.

This is the first ARC after the change of admin. (See details)

  • The criteria for scoring have been revised.
  • The difficulty of the later problems is lower than before.

However, due to special circumstances, the difficulty of the earlier problems has significantly increased compared to the standard difficulty target for ARC under the new admin. In the future, the earlier problems in ARC are expected to be easier than this one.

Given the even distribution of difficulty, we recommend reading all problems rather than focusing solely on solving them in order.

We are looking forward to your participation!

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By atcoder_official, history, 3 months ago, In English

We will hold UNIQUE VISION Programming Contest 2024 Autumn (AtCoder Beginner Contest 372).

We are looking forward to your participation!

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By atcoder_official, history, 3 months ago, In English

We will hold 11th Asprova Programming Contest(AtCoder Heuristic Contest 037).

AtCoder Heuristic Contest (AHC) is a series of programming contests held regularly on AtCoder. Unlike algorithm contests such as ABC/ARC/AGC, the goal is to create a better solution to a problem for which it is difficult to find the optimal solution. We will hold a long-term contest with a duration of more than a week and a short-term contest with a duration of less than a day, roughly alternately about once a month.

This contest is one of the qualifying contests for AtCoder World Tour Finals 2025 to crown the world champion of AtCoder players. Please refer to this post for more details.

After the contest ends, all participants can post their approach on the Editorial tab. Please share your approach.

We are looking forward to your participation!

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By atcoder_official, history, 3 months ago, In English

We will hold AtCoder Beginner Contest 371.

We are looking forward to your participation!

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By atcoder_official, history, 3 months ago, In English

We will hold Toyota Programming Contest 2024#9(AtCoder Beginner Contest 370).

We are looking forward to your participation!

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By atcoder_official, history, 3 months ago, In English

We will hold AtCoder Beginner Contest 369.

We are looking forward to your participation!

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