| Platinum 3문제 expand_more |
| 4141 | Cave Paintings | USACO 2020 January Platinum | 0 | 0 | |
| 4142 | Non-Decreasing Subsequences | USACO 2020 January Platinum | 0 | 0 | |
| 4143 | Falling Portals | USACO 2020 January Platinum | 0 | 0 | |
| Gold 3문제 expand_more |
 4827 | 영업왕 명석이 (Time is Mooney) | USACO 2020 January Gold | 54 | 156 | 34.62% |
 4145 | Farmer John Solves 3SUM | USACO 2020 January Gold | 1 | 2 | 50.00% |
 4146 | Springboards | USACO 2020 January Gold | 2 | 3 | 66.67% |
| Silver 3문제 expand_more |
| 4147 | Berry Picking | USACO 2020 January Silver | 1 | 1 | 100.00% |
| 4148 | Loan Repayment | USACO 2020 January Silver | 0 | 2 | 0.00% |
| 4149 | Wormhole Sort | USACO 2020 January Silver | 1 | 2 | 50.00% |
| Bronze 3문제 expand_more |
 4150 | 워드 프로세서 translate auto_awesome 스페셜 저지 | USACO 2020 January Bronze | 13 | 25 | 52.00% |
 4151 | 사진 촬영 translate | USACO 2020 January Bronze | 4 | 10 | 40.00% |
| 4152 | Race | USACO 2020 January Bronze | 3 | 7 | 42.86% |
