We will hold ALGO ARTIS Programming Contest 2023 Winter（AtCoder Heuristic Contest 028）.

• Contest URL: https://atcoder.jp/contests/ahc028
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20240113T1500&p1=248
• Duration: 4 hours
• Writer: terry_u16
• Rated range: All (Heuristic Rating)

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!

We will host AtCoder World Tour Finals 2025 to crown the world champion of AtCoder players!

AWTF2025 will invite a total of 24 contestants, 12 in the Algorithm division and 12 in the Heuristic division, to the finals to be held in Tokyo, Japan.

The finalists will be determined based on the results of AtCoder's contests during the year 2024. The schedule for the finals has not yet been finalized, but will be announced by the mid-2024.

The method for determining the finalists is as follows.

Algorithm Division

The finalists will be determined based on the results of AtCoder Grand Contest. If you get the top 30 places in AGCs, you will get GP30 scores. The top 12 with the highest total GP30 scores will be invited to the finals.

Heuristic Division

The finalists will be determined based on the results of AtCoder Heuristic Contest. If you get the top 30 places in AHCs, you will get GP30 scores. The top 12 with the highest total GP30 scores will be invited to the finals.

For more details and updates, see here.

We will hold AtCoder Beginner Contest 335 (Sponsored by Mynavi).

• Contest URL: https://atcoder.jp/contests/abc335
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20240106T2100&p1=248
• Duration: 100 minutes
• Writer: physics0523, kyopro_friends, evima, leaf1415, PCTprobability
• Tester: leaf1415, MMNMM
• Rated range: ~ 1999
• The point values: 100-150-300-350-525-525-600

We are looking forward to your participation!

We will hold UNIQUE VISION Programming Contest 2023 Christmas (AtCoder Beginner Contest 334).

• Contest URL: https://atcoder.jp/contests/abc334
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20231223T2100&p1=248
• Duration: 100 minutes
• Writer: yuto1115, cn449
• Tester: leaf1415, math957963
• Rated range: ~ 1999
• The point values: 100-250-350-400-450-550-650

We are looking forward to your participation!

We will hold RECRUIT Nihonbashi Half Marathon 2024 Winter（AtCoder Heuristic Contest 029）.

• Contest URL: https://atcoder.jp/contests/ahc029
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20231222T1200&p1=248
• Duration: 4 days
• Staff: cozy_sauna, dpforest, eha, FLOPPY_30, hamray, japlj, kanra824, kys, n_knuu, Naccan, roiti, shichinomiya, shiratty8, smiken, sugim48, suzume, TangentDay, Ti11192916, tomerun, yupiteru, yusk
• Rated range: All (Heuristic Rating)

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, alternately about once a month.

AHC has a new rating system that is different from the existing ABC/ARC/AGC rating system. Unlike the ABC/ARC/AGC ratings, AHC rating system we use is monotonically non-decreasing, which values the best performance rather than the average performance. Please feel free to participate. You can check the current ranking here: https://atcoder.jp/ranking?contestType=heuristic

After the contest ends, you can share your approach on the Editorial tab. Please feel free to use it.

We are looking forward to your participation!

We will hold Toyota Programming Contest 2023#8（AtCoder Beginner Contest 333）.

• Contest URL: https://atcoder.jp/contests/abc333
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20231216T2100&p1=248
• Duration: 100 minutes
• Writer: MMNMM, nok0, evima, m_99, leaf1415, kyopro_friends
• Tester: Nyaan, kyopro_friends
• Rated range: ~ 1999
• The point values: 100-200-300-400-450-550-625

We are looking forward to your participation!

We will hold AtCoder Beginner Contest 332.

• Contest URL: https://atcoder.jp/contests/abc332
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20231210T2100&p1=248
• Duration: 100 minutes
• Writer: math957963, leaf1415, evima, m_99
• Tester: physics0523, cn449
• Rated range: ~ 1999
• The point values: 100-200-300-425-525-550-625

We are looking forward to your participation!

We will hold Daiwa Securities Co. Ltd. Programming Contest 2023（AtCoder Beginner Contest 331）.

• Contest URL: https://atcoder.jp/contests/abc331
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20231202T2100&p1=248
• Duration: 100 minutes
• Writer: kyopro_friends, Nyaan, evima, chokudai
• Tester: yuto1115, nok0
• Rated range: ~ 1999
• The point values: 100-200-300-450-450-525-625

We are looking forward to your participation!

We will hold HACK TO THE FUTURE 2024 (AtCoder Heuristic Contest 027).

• Contest URL: https://atcoder.jp/contests/ahc027
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20231201T1900&p1=248
• Duration: 9 days
• Writer: wata_admin
• Staff: tsukammo, marroncastle917, riantkb
• Rated range: All (Heuristic Rating)

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, alternately about once a month.

AHC has a new rating system that is different from the existing ABC/ARC/AGC rating system. Unlike the ABC/ARC/AGC ratings, AHC rating system we use is monotonically non-decreasing, which values the best performance rather than the average performance. Please feel free to participate. You can check the current ranking here: https://atcoder.jp/ranking?contestType=heuristic

We are looking forward to your participation!

We will hold TOYOTA SYSTEMS Programming Contest 2023(AtCoder Beginner Contest 330).

• Contest URL: https://atcoder.jp/contests/abc330
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20231125T2100&p1=248
• Duration: 100 minutes
• Writer: nok0, physics0523, evima, ynymxiaolongbao
• Tester: MMNMM, leaf1415
• Rated range: ~ 1999
• The point values: 100-200-300-400-475-525-625

We are looking forward to your participation!

We will hold Sky Inc, Programming Contest 2023 (AtCoder Beginner Contest 329).

• Contest URL: https://atcoder.jp/contests/abc329
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20231118T2100&p1=248
• Duration: 100 minutes
• Writer: cn449, yuto1115, evima, chokudai
• Tester: math957963, Nyaan
• Rated range: ~ 1999
• The point values: 100-200-300-350-475-500-625

We are looking forward to your participation!

We will hold Toyota Programming Contest 2023#7（AtCoder Beginner Contest 328）.

• Contest URL: https://atcoder.jp/contests/abc328
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20231111T2100&p1=248
• Duration: 100 minutes
• Writer: leaf1415, MMNMM, evima, m_99
• Tester: kyopro_friends, physics0523
• Rated range: ~ 1999
• The point values: 100-200-300-425-475-525-575

We are looking forward to your participation!

We will hold Toyota Programming Contest 2023#6 (AtCoder Heuristic Contest 026).

• Contest URL: https://atcoder.jp/contests/ahc026
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20231105T1500&p1=248
• Duration: 4 hours
• Writer: wata_admin
• Rated range: All (Heuristic Rating)

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, alternately about once a month.

AHC has a new rating system that is different from the existing ABC/ARC/AGC rating system. Unlike the ABC/ARC/AGC ratings, AHC rating system we use is monotonically non-decreasing, which values the best performance rather than the average performance. Please feel free to participate. You can check the current ranking here: https://atcoder.jp/ranking?contestType=heuristic

We are looking forward to your participation!

We will hold HHKB Programming Contest 2023(AtCoder Beginner Contest 327).

• Contest URL: https://atcoder.jp/contests/abc327
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20231104T2100&p1=248
• Duration: 100 minutes
• Writer: Nyaan, math957963, evima
• Tester: cn449, yuto1115
• Rated range: ~ 1999
• The point values: 100-200-250-400-475-550-650

We are looking forward to your participation!

We will hold Panasonic Programming Contest 2023（AtCoder Beginner Contest 326）.

• Contest URL: https://atcoder.jp/contests/abc326
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20231028T2100&p1=248
• Duration: 100 minutes
• Writer: physics0523, kyopro_friends, evima
• Tester: nok0, MMNMM
• Rated range: ~ 1999
• The point values: 100-200-300-450-450-525-625

We are looking forward to your participation!

We will hold KEYENCE Programming Contest 2023 Autumn（AtCoder Beginner Contest 325）.

• Contest URL: https://atcoder.jp/contests/abc325
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20231021T2100&p1=248
• Duration: 100 minutes
• Writer: yuto1115, cn449, ideas of all tasks are provided by KEYENCE
• Tester: PCTprobability, math957963
• Rated range: ~ 1999
• The point values: 100-250-300-450-450-500-575

We are looking forward to your participation!

We will hold AtCoder Heuristic Contest 025.

• Contest URL: https://atcoder.jp/contests/ahc025
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20231014T1200&p1=248
• Duration: 8 days
• Writer: wata_admin
• Rated range: All (Heuristic Rating)

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, alternately about once a month.

AHC has a new rating system that is different from the existing ABC/ARC/AGC rating system. Unlike the ABC/ARC/AGC ratings, AHC rating system we use is monotonically non-decreasing, which values the best performance rather than the average performance. Please feel free to participate. You can check the current ranking here: https://atcoder.jp/ranking?contestType=heuristic

We are looking forward to your participation!

We will hold Japan Registry Services (JPRS) Programming Contest 2023 (AtCoder Beginner Contest 324).

• Contest URL: https://atcoder.jp/contests/abc324
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20231014T2100&p1=248
• Duration: 100 minutes
• Writer: MMNMM, leaf1415, evima, kyopro_friends, ynymxiaolongbao
• Tester: kyopro_friends, Nyaan
• Rated range: ~ 1999
• The point values: 100-200-300-425-500-500-600

We are looking forward to your participation!

We will hold UNIQUE VISION Programming Contest 2023 Autumn(AtCoder Beginner Contest 323).

• Contest URL: https://atcoder.jp/contests/abc323
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20231007T2100&p1=248
• Duration: 100 minutes
• Writer: nok0, math957963, kyopro_friends, evima
• Tester: cn449, physics0523
• Rated range: ~ 1999
• The point values: 100-200-250-425-450-525-650 We are looking forward to your participation!

We will hold AtCoder Beginner Contest 322.

• Contest URL: https://atcoder.jp/contests/abc322
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20230930T2100&p1=248
• Duration: 100 minutes
• Writer: Nyaan, PCTprobability, chokudai
• Tester: leaf1415, yuto1115
• Rated range: ~ 1999
• The point values: 100-200-250-400-475-550-600

We are looking forward to your participation!

We will hold Marubeni Programming Contest 2023 (AtCoder Heuristic Contest 024).

• Contest URL: https://atcoder.jp/contests/ahc024
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20230924T1500&p1=248
• Duration: 4 hours
• Writer: wata_admin
• Rated range: All (Heuristic Rating)

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, alternately about once a month.

AHC has a new rating system that is different from the existing ABC/ARC/AGC rating system. Unlike the ABC/ARC/AGC ratings, AHC rating system we use is monotonically non-decreasing, which values the best performance rather than the average performance. Please feel free to participate. You can check the current ranking here: https://atcoder.jp/ranking?contestType=heuristic

We are looking forward to your participation!

We will hold SuntoryProgrammingContest2023 (AtCoder Beginner Contest 321).

• Contest URL: https://atcoder.jp/contests/abc321
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20230923T2100&p1=248
• Duration: 100 minutes
• Writer: physics0523, yuto1115, kyopro_friends, nok0, ynymxiaolongbao
• Tester: nok0, MMNMM
• Rated range: ~ 1999
• The point values: 100-200-300-400-450-525-600

We are looking forward to your participation!

We will hold Toyota Programming Contest 2023#5（AtCoder Beginner Contest 320）.

• Contest URL: https://atcoder.jp/contests/abc320
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20230916T2100&p1=248
• Duration: 100 minutes
• Writer: kyopro_friends, cn449
• Tester: PCTprobability, math957963
• Rated range: ~ 1999
• The point values: 100-200-300-400-475-550-600

We are looking forward to your participation!

We will hold AtCoder Beginner Contest 319.

• Contest URL: https://atcoder.jp/contests/abc319
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20230909T2100&p1=248
• Duration: 100 minutes
• Number of Tasks: 8
• Writer: MMNMM, leaf1415, Nyaan, chokudai, m_99, evima
• Tester: kyopro_friends, Nyaan
• Rated range: ~ 1999

The point values will be 100-200-300-400-450-550-575.

Until ABC 318, we used 8 problems per contest because there were many difficult tasks we wanted to use in ABCs. Since we have used most of them, from this ABC, we will use 7 problems per contest.

The difficulty of problems A-F will not be changed. The range of difficulty of new problem Gs will be wider, some of them can be as easy as current problem Gs, while others can be as hard as current problem Exs. Please check the point values of each contest for more accurate estimation of difficulties.

We are looking forward to your participation!

We will hold THIRD PROGRAMMING CONTEST 2023 ALGO（AtCoder Beginner Contest 318）.

• Contest URL: https://atcoder.jp/contests/abc318
• Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20230902T2100&p1=248
• Duration: 100 minutes
• Number of Tasks: 8
• Writer: math957963, nok0, evima, m_99, Nyaan
• Tester: cn449, physics0523
• Rated range: ~ 1999

The point values will be 100-200-300-400-450-575-575-650.

We are looking forward to your participation!