| 5521 | 垃圾井 | 0 |
| 5531 | 光纤通信 | 0 |
| 5532 | 奶牛求幂 | 0 |
| 5533 | 奶牛蹬车队 | 0 |
| 5534 | 重建道路 | 0 |
| 5535 | 三角形牧场 | 0 |
| 5536 | 催眠 | 0 |
| 5537 | 快乐的奶牛 | 0 |
| 5538 | 一进制奶牛 | 0 |
| 5539 | 雄伟的山峰 | 0 |
| 5540 | 秘密管道 | 0 |
| 5541 | 马戏团门票 | 0 |
| 5542 | 生命周期 | 0 |
| 5546 | 牧场的栅栏 | 0 |
| 5547 | 晚会的菜肴 | 0 |
| 5548 | 漫步的奶牛 | 0 |
| 5549 | 牧场的划分 | 0 |
| 5550 | 下一颗树 | 0 |
| 5551 | 牛的杂志 | 0 |
| 5552 | 战争的俘虏 | 0 |
| 5553 | 奶牛职业网球赛 | 0 |
| 5600 | [USACO2018DEC Gold]Fine Dining | 1 |
| 5601 | [USACO2018DEC Gold]Cowpatibility | 1 |
| 5602 | [USACO2018DEC Gold]Teamwork | 1 |
| 5603 | [USACO2018FEB Gold]Snow Boots | 1 |
| 5604 | [USACO2018FEB Gold]Directory Traversal | 1 |
| 5605 | [USACO2018FEB Gold]Taming the Herd | 1 |
| 5606 | [USACO2018JAN Gold]MooTube | 2 |
| 5607 | [USACO2018JAN Gold]Cow at Large | 1 |
| 5608 | [USACO2018JAN Gold]Stamp Painting | 1 |
| 5609 | [USACO2017FEB Gold]Why Did the Cow Cross the Road 1 | 1 |
| 5610 | [USACO2017FEB Gold]Why Did the Cow Cross the Road 2 | 1 |
| 5611 | [USACO2017FEB Gold]Why Did the Cow Cross the Road 3 | 1 |
| 5612 | [USACO2019OPEN Gold]Snakes | 2 |
| 5613 | [USACO2019OPEN Gold]I Would Walk 500 Miles | 1 |
| 5614 | [USACO2019OPEN Gold]Balancing Inversions | 1 |
| 5615 | [USACO2020JAN Gold]Time is Mooney | 1 |
| 5616 | [USACO2020JAN Gold]Farmer John Solves 3SUM | 1 |
| 5617 | [USACO2020JAN Gold]跳板 | 2 |
| 5618 | [USACO2016OPEN Gold]Splitting the Field | 1 |
| 5620 | [USACO2016OPEN Gold]248 | 1 |
| 5800 | [USACO2018DEC Plat]平衡木 | 0 |
| 5801 | [USACO2018DEC Plat] 排序 | 0 |
| 5802 | [USACO2018DEC Plat]The Cow Gathering | 0 |
| 5803 | [USACO2018FEB Plat]Slingshot | 1 |
| 5804 | [USACO2018FEB Plat]New Barns | 1 |
| 5805 | [USACO2018FEB Plat]Cow Gymnasts | 1 |
| 5806 | [USACO2017FEB Plat]Why Did the Cow Cross the Road 1 | 1 |
| 5807 | [USACO2017FEB Plat]Why Did the Cow Cross the Road 2 | 1 |
| 5808 | [USACO2017FEB Plat]Why Did the Cow Cross the Road 3 | 1 |