| Platinum 3문제 expand_more |
| 5795 | Sleeping Cows | USACO 2020 December Platinum | 0 | 1 | 0.00% |
| 5794 | Spaceship | USACO 2020 December Platinum | 0 | 0 | |
| 5793 | Cowmistry | USACO 2020 December Platinum | 0 | 0 | |
| Gold 3문제 expand_more |
| 5792 | Replication | USACO 2020 December Gold | 0 | 0 | |
| 5791 | Bovine Genetics | USACO 2020 December Gold | 0 | 0 | |
| 5790 | Square Pasture | USACO 2020 December Gold | 0 | 2 | 0.00% |
| Silver 3문제 expand_more |
| 5789 | Cowntagion | USACO 2020 December Silver | 1 | 1 | 100.00% |
| 5787 | Rectangular Pasture | USACO 2020 December Silver | 0 | 0 | |
| 5786 | Stuck in a Rut | USACO 2020 December Silver | 0 | 1 | 0.00% |
| Bronze 3문제 expand_more |
 5375 | ABC 맞추기 (Do You Know Your ABCs?) | USACO 2020 December Bronze | 8 | 12 | 66.67% |
| 5376 | 평균 꽃 (Daisy Chains) | USACO 2020 December Bronze | 40 | 115 | 34.78% |
| 5377 | 소는 풀을 좋아해 (Stuck in a Rut) | USACO 2020 December Bronze | 3 | 3 | 100.00% |
