| Platinum 3문제 expand_more |
| 4045 | Lifeguards | USACO 2018 January Platinum | 0 | 0 | |
 4046 | 경비원 call_split 서브태스크 | USACO 2018 January Platinum | 4 | 25 | 16.00% |
| 4047 | Sprinklers | USACO 2018 January Platinum | 0 | 0 | |
| Gold 3문제 expand_more |
 4048 | MooTube | USACO 2018 January Gold | 6 | 14 | 42.86% |
| 4049 | Cow at Large translate | USACO 2018 January Gold | 4 | 5 | 80.00% |
 4050 | Stamp Painting | USACO 2018 January Gold | 2 | 3 | 66.67% |
| Silver 3문제 expand_more |
 4051 | Lifeguards | USACO 2018 January Silver | 3 | 7 | 42.86% |
| 4052 | Rental Service | USACO 2018 January, Silver | 1 | 4 | 25.00% |
 4053 | MooTube | USACO 2018 January Silver | 3 | 3 | 100.00% |
| Bronze 3문제 expand_more |
 4054 | Blocked Billboard II | USACO 2018 January Bronze | 4 | 29 | 13.79% |
 4055 | 라이프가드 translate | USACO 2018 January Bronze | 2 | 3 | 66.67% |
| 4056 | Out of Place | USACO 2018 January Bronze | 0 | 0 | |
