| Platinum 3문제 expand_more |
| 4081 | Balance Beam | USACO 2018 December Platinum | 1 | 15 | 6.67% |
 4082 | Sort It Out | USACO 2018 December Platinum | 3 | 10 | 30.00% |
| 4083 | The Cow Gathering | USACO 2018 December Platinum | 0 | 0 | |
| Gold 3문제 expand_more |
 4084 | Fine Dining | USACO 2018 December Gold | 3 | 3 | 100.00% |
| 4085 | Cowpatibility | USACO 2018 December Gold | 0 | 0 | |
 4086 | Teamwork | USACO 2018 December Gold | 4 | 9 | 44.44% |
| Silver 3문제 expand_more |
| 4087 | Convention translate | USACO 2018 December Silver | 2 | 2 | 100.00% |
 4088 | Convention II | USACO 2018 December Silver | 2 | 2 | 100.00% |
| 4089 | Mooyo Mooyo | USACO 2018 December Silver | 1 | 1 | 100.00% |
| Bronze 3문제 expand_more |
 4090 | 우유 섞기 translate | USACO 2018 December Bronze | 20 | 26 | 76.92% |
| 4091 | The Bucket List translate | USACO 2018 December Bronze | 2 | 2 | 100.00% |
 4092 | 왔다갔다 translate | USACO 2018 December Bronze | 1 | 2 | 50.00% |
