Final Results: USACO 2022 December 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 |   2024    | Zihou Zhong | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN |   2024    | Wentao Ying | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN |   2024    | Jiazhe Hu | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
USA |   2025    | Ryan Bai | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN |   2024    | Huaisha Zhang | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN |   2024    | Wang Yuanxin | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN |   2024    | Zhicheng Tang | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
JPN |   2023    | Yuki Tanaka | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN |   2024    | Yihang Guo | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN |   2025    | Zhou Kangyang | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CAN |   2024    | Bálint Rózsa | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
USA |   2023    | Hankai Zhang | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN |   2024    | Chenxiao Yan | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN |   2023    | Victor John | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN |   2025    | Jiacheng Shi | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
IRN |   2023    | Sepehr Ramezani | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN |   2025    | Hengzhe Sun | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN |   2024    | Shenghan Lin | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
ISR |   2025    | Daniel Weber | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN |   2024    | Siyuan Cheng | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN |   2025    | Miao Xian | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN |   2023    | Hua Hua | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
USA |   2025    | Rain Jiang | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN |   2024    | Chenlu Li | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN |   2024    | HongYi Wang | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN |   2024    | Zemu Zhu | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
SGP |   2023    | Zheyuan Yu | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN |   2023    | Chunjin Li | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN |   2024    | Chenran Wang | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
Pre-College Participants (USA only):
Country |
Year |
Name |
Score |
    | Problem 1 |     | Problem 2 |     | Problem 3 |
USA |   2025    | Ryan Bai | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
USA |   2023    | Hankai Zhang | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
USA |   2025    | Rain Jiang | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
USA |   2025    | Rohin Garg | 889 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | t | t | t | t | t | |
USA |   2023    | Benjamin Chen | 778 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | t | t | t | t | t | t | t | t | t | t | |
USA |   2025    | Adam Gasienica - Samek | 778 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | t | t | t | t | t | t | t | t | t | t | |
USA |   2024    | Varun Ragunath | 778 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | t | t | t | t | t | t | t | t | t | t | |
USA |   2024    | Thomas Liu | 756 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | t | ! | ! | ! | ! | ! | ! | ! | ! | ! | ! | |
USA |   2024    | Yibo Cheng | 756 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | t | t | t | t | t | t | t | t | t | t | t | |
USA |   2025    | Bing-Dong Liu | 756 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | t | x | x | x | x | x | x | x | x | x | x | |
Observers:
Country |
Name |
Score |
    | Problem 1 |     | Problem 2 |     | Problem 3 |
CHN | Shaojia Zhang | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
USA | Andrew Gu | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | Yuchen Wu | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
BLR | Yahor Dubovik | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | Kubic Guo | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | Xiangwan Du | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
USA | Andrew He | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
RUS | Aleksei Esin | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | Lingyu Jiang | 1000 | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |
CHN | Hu Zhaoyang | 897 | | * | * | * | * | * | * | * | * | * | * | t | t | t | t | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | | | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | * | |