Final Results: USACO 2023 January Contest, Platinum
Key:
* = Correct
x = Wrong Answer (including possibly empty or missing output file)
t = Timeout
c = Didn't Compile
! = Run-time error or exceeded memory limits
Pre-College Participants (Full List):
Country |
Year |
Name |
Score |
| Problem 1 | | Problem 2 | | Problem 3 |
CHN | 2023 | Yiping Liu | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | 2024 | Jiahui Chen | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CAN | 2024 | Tianjun Zheng | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | 2025 | Jiacheng Shi | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | 2024 | Chenran Wang | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
JPN | 2023 | Yuki Tanaka | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
USA | 2025 | Agastya Goel | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | 2024 | Shi Chen | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | 2025 | Zhou Kangyang | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | 2024 | Weiran Ma | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | 2024 | Weixin Kong | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | 2025 | Xinyang Chen | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | 2024 | Jiazhe Hu | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | 2024 | Alan Zhai | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | 2024 | Shangdao Li | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | 2026 | Suyi Wang | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | 2024 | Jiaxing Song | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | 2023 | Wanjun Gu | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | 2024 | Laurie Qi | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | 2024 | Yihang Guo | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | 2024 | Siyuan Cheng | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | 2022 | Nuo Chen | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | 2024 | Zihou Zhong | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
USA | 2025 | Rain Jiang | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | 2024 | HongYi Wang | 826 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | t | t | t | t | t | t | * | * | * | t | t | t | t | t | t | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
USA | 2025 | Rohin Garg | 800 | | * | * | * | * | * | * | * | t | t | t | t | t | t | t | t | t | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | 2025 | Jinyi Li | 800 | | * | * | * | * | * | * | * | t | t | t | t | t | t | t | t | t | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | 2024 | Yuqi Peng | 800 | | * | * | * | * | * | * | * | t | t | t | t | t | t | t | t | t | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
ISR | 2025 | Daniel Weber | 800 | | * | * | * | * | * | * | * | t | t | t | t | t | t | t | t | t | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
USA | 2025 | Ryan Bai | 800 | | * | * | * | * | * | * | * | t | t | t | t | t | t | t | t | t | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
POL | 2024 | Rafal Manczyk | 800 | | * | * | * | * | * | * | * | t | t | t | t | t | t | t | t | t | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
Pre-College Participants (USA only):
Country |
Year |
Name |
Score |
| Problem 1 | | Problem 2 | | Problem 3 |
USA | 2025 | Agastya Goel | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
USA | 2025 | Rain Jiang | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
USA | 2025 | Rohin Garg | 800 | | * | * | * | * | * | * | * | t | t | t | t | t | t | t | t | t | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
USA | 2025 | Ryan Bai | 800 | | * | * | * | * | * | * | * | t | t | t | t | t | t | t | t | t | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
USA | 2023 | Hankai Zhang | 800 | | * | * | * | * | * | * | * | t | t | t | t | t | t | t | t | t | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
USA | 2024 | Eric Yang | 783 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | ! | ! | ! | ! | ! | t | t | t | t | t | t | t | t | t | t | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
USA | 2024 | Yibo Cheng | 767 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | x | x | x | x | x | x | x | x | x | x | x | x | x | x | |
USA | 2025 | Gavin Ye | 739 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | x | * | t | t | t | t | t | * | * | * | x | x | t | t | t | t | t | t | t | t | t | t | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
USA | 2025 | Adam Gasienica - Samek | 739 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | x | * | x | x | * | ! | ! | ! | ! | ! | t | t | t | t | t | t | t | t | t | t | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
Observers:
Country |
Name |
Score |
| Problem 1 | | Problem 2 | | Problem 3 |
FRA | Noé Weeks | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
KOR | Jaehyun Koo | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CAN | Eric Hu | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | QiXuan Li | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
IRN | Parsa Pordeli Behrouz | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | Kevin Xu | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | RuiZao Wang | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | Ruiyang Zhang | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | Hu Zhaoyang | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CAN | Kevin Sun | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
USA | Jay Leeds | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | Xintong Fang | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | Weitao Chen | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | Lingyu Jiang | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
RUS | Aleksei Esin | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | Yujing Zheng | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
USA | Andrew He | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | Yuchen Wu | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |