Contest
Active Contests
| Start Time | Contest Name |
|---|---|
| ◉ THIRD PROGRAMMING CONTEST 2025（AtCoder Heuristic Contest 045） |
Permanent Contests
First-time users: practice contest / Library testing: AtCoder Library Practice Contest
Upcoming Contests
Recent Contests
Ranking: Algorithm
Important announcements
- [2025-03-20] Changes to the Rated Cap of ARC Div.1
- [2025-01-17] AHC's New Rating System
- [2025-01-15] Tentative 2025 AHC Schedule
- [2025-01-15] Announcement of AtCoder World Tour Finals 2026
- [2024-12-16] Information
- [2024-12-06] Regarding Rule Changes in ABC and ARC Due to Technological Advancement of Generative AI
- [2024-12-06] Rule Changes Regarding ARC's Division System
- [2024-12-04] Password Management for Your AtCoder Account
- [2024-12-03] Announcement Regarding ARC's Division System
- [2024-08-08] Restructuring of contests
Recent contest announcements
- [2025-03-29] New AtCoder Grand Contest 071 Announcement
- [2025-03-28] New AtCoder Beginner Contest 399 Announcement
- [2025-03-27] New THIRD PROGRAMMING CONTEST 2025（AtCoder Heuristic Contest 045） Announcement
- [2025-03-21] AtCoder Regular Contest 195 (Div. 2) Announcement
- [2025-03-21] UNIQUE VISION Programming Contest 2025 Spring (AtCoder Beginner Contest 398) Announcement
We will hold AtCoder Grand Contest 071. This contest counts for GP30 scores.
- Contest URL: https://atcoder.jp/contests/agc071
- Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20250330T2100&p1=248
- Duration: 180 minutes
- Number of Tasks: 5
- Writer:
chinerist - Tester: maspy, IH19980412
- Rated range: 2000 ~
The point values will be 700-900-1100-1300-1700.
We are looking forward to your participation!
We will hold AtCoder Beginner Contest 399.
- Contest URL: https://atcoder.jp/contests/abc399
- Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20250329T2100&p1=248
- Duration: 100 minutes
- Writer:
Nyaan, yuto1115, 
ynymxiaolongbao - Tester:
MtSaka, sounansya - Rated range: ~ 1999
- The point values: 100-200-350-400-500-550-675
We are looking forward to your participation!
We will hold THIRD PROGRAMMING CONTEST 2025（AtCoder Heuristic Contest 045）.
- Contest URL: https://atcoder.jp/contests/ahc045
- Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20250328T1900&p1=248
- Duration: 10 days
- Writer:
Shun_PI - Rated range: All (Heuristic Rating)
This contest is one of the qualifying contests for AWTF 2026.
We are looking forward to your participation!
We will hold AtCoder Regular Contest 195 (Div. 2).
- Contest URL: https://atcoder.jp/contests/arc195
- Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20250323T2100&p1=248
- Duration: 120 minutes
- Number of Tasks: 5
- Writer: tokusakurai
- Tester: Nyaan, maspy
- Rated range: 1200 ~ 2399
The point values will be 400-500-600-700-900.
We are looking forward to your participation!
We will hold UNIQUE VISION Programming Contest 2025 Spring (AtCoder Beginner Contest 398).
- Contest URL: https://atcoder.jp/contests/abc398
- Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20250322T2100&p1=248
- Duration: 100 minutes
- Writer: physics0523, kyopro_friends,
tatyam - Tester:
nok0, MMNMM - Rated range: ~ 1999
- The point values: 100-250-300-425-425-500-600
We are looking forward to your participation!