2025 US Open Contest -- Final Results
The 2025 US Open contest featured algorithmic programming problems covering a wide range of techniques and levels of difficulty.
A total of 5782 distinct users logged into the contest during its 4-day span. A total of 4024 participants submitted at least one solution, hailing from 100+ different countries. 2349 participants were from the USA, with high levels of participation also from China, Canada, Korea, Romania, India, and Singapore.
In total, there were 10638 graded submissions, broken down by language as follows:6698 C++17 1701 Python-3.6.9 1315 Java 866 C++11 41 C 17 Python-2.7.17
Below are the detailed results for each of the platinum, gold, silver, and bronze contests. You will also find solutions and test data for each problem, and by clicking on any problem you can practice re-submitting solutions in "analysis mode". If you are logged in, you will also see your own specific results below alongside the contest(s) you took.
USACO 2025 US Open Contest, Platinum
The platinum division had 255 total participants, of whom 199 were pre-college students. Results for top scorers are here. Congratulations to all of the top participants for their excellent results!
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USACO 2025 US Open Contest, Gold
The gold division had 856 total participants, of whom 627 were pre-college students. All competitors who scored 850 or higher on this contest are automatically promoted to the platinum division. The list of USA pre-college students who were promoted is here.
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USACO 2025 US Open Contest, Silver
The silver division had 2000 total participants, of whom 1545 were pre-college students. All competitors who scored 750 or higher on this contest are automatically promoted to the gold division.
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USACO 2025 US Open Contest, Bronze
The bronze division had 2461 total participants, of whom 1883 were pre-college students. All competitors who scored 700 or higher on this contest are automatically promoted to the silver division.
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Final Remarks
The 2024-2025 season is now at its end. I'm glad to see that all contests this season ran smoothly and resulted in a large number of promotions, despite the difficulty of the problems. Congrats to everyone who has participated and whose coding and problem-solving skills have improved throughout the season.
For those not yet promoted, remember that the more practice you get, the better your algorithmic coding skills will become -- please keep at it! USACO contests are designed to challenge even the very best students, and it can take a good deal of hard work to excel at them. To help you fix any bugs in your code, you can now re-submit your solutions and get feedback from the judging server using "analysis mode".
A large number of people contribute towards the quality and success of USACO contests. Those who helped with this contest include Suhas Nagar, Nathan Wang, Nick Wu, William Lin, Chongtian Ma, Alex Liang, Aakash Gokhale, Weiming Zhou, Ho Tin Fan, Michelle Wei, Jichao Qian, Brandon Wang, Dhruv Rohatgi, Thomas Liu, Haokai Ma, Larry Xing, Eric Yang, Austin Geng, Andi Qu, Benjamin Chen, Anand John, and Benjamin Qi. Thanks also to our translators for their help in extending the reach of our contests. Finally, we are exceedingly grateful to the USACO sponsors for their generous support: Citadel, which has become the exclusive sponsor for our camp and IOI/EGOI teams, and Jump Trading, which helps to sponsor our online contests.
Wish us luck at the 2025 IOI and EGOI, and we look forward to seeing everyone again for the 2025-2026 contest season!
Happy coding!
- Brian Dean ([email protected])
Professor and Director, School of Computing, Clemson University
Director, USACO