| 1112 | FreeOpen | 1 | 0 | 0.000% |
| 2484 | Social Distancing II | 1 | 4 | 25.000% |
| 2485 | 寻找零号病牛(patient zero) | 1 | 2 | 50.000% |
| 2486 | USACO-2020Open-Silver03 - The Moo Particle | 2 | 2 | 100.000% |
| 2634 | USACO2020Open P1 - Social Distancing 01 | 2 | 3 | 66.667% |
| 2881 | USACO 2017 US Open Contest, Gold Problem 3. Modern Art 2 | 1 | 3 | 33.333% |
| 2885 | USACO 2019 US Open Contest, Bronze Problem 2. Milk Factory | 1 | 1 | 100.000% |
| 2888 | USACO2021Open Siver02 - Do you know your ABC? | 0 | 1 | 0.000% |
| 2889 | USACO2021Open Gold01 - United Cows of Farmer John | 2 | 3 | 66.667% |
| 2890 | USACO2021Open Siver01 -Maze Tac Toe | 2 | 5 | 40.000% |
| 2913 | USACO 2021Open- Gold - P2 - Portals | 2 | 5 | 40.000% |
| 3342 | 【USACO2007OPEN】地平线上的高楼 | 2 | 0 | 0.000% |
| 3343 | 【USACO2007OPEN】翻瓦片游戏 | 1 | 0 | 0.000% |
| 3360 | 【USACO2008OPEN】三岔路口 | 134 | 228 | 58.772% |
| 3361 | 【USACO2008OPEN】名字的能量 | 3 | 1 | 300.000% |
| 3362 | 【USACO2008OPEN】奶牛飞车 | 3 | 1 | 300.000% |
| 3363 | 【USACO2008OPEN】危险的寻宝路 | 2 | 1 | 200.000% |
| 3373 | Cheapest Palindrome poj3280 | 3 | 3 | 100.000% |
| 4421 | P3669 [USACO17OPEN] Paired Up S | 7 | 8 | 87.500% |
| 4428 | P8267 [USACO22OPEN] Counting Liars B | 18 | 25 | 72.000% |
| 4475 | 抓住那头奶牛 ( catch ) usaco 2007 Open silver | 93 | 216 | 43.056% |
| 4476 | P6181 [USACO10OPEN] Mountain Watching S | 4 | 9 | 44.444% |
| 4478 | P8268 [USACO22OPEN] Alchemy B | 2 | 2 | 100.000% |
| 4531 | P2949 [USACO09OPEN] Work Scheduling G | 0 | 0 | 0.000% |
| 4551 | P6243 [USACO06OPEN] The Milk Queue G | 0 | 0 | 0.000% |
| 4640 | P1588 [USACO07OPEN] Catch That Cow S | 0 | 0 | 0.000% |
| 4729 | P2907 [USACO08OPEN] Roads Around The Farm S（入门） | 0 | 0 | 0.000% |
| 4746 | P3669 [USACO17OPEN] Paired Up S（普及-） | 3 | 3 | 100.000% |
| 4754 | P8267 [USACO22OPEN] Counting Liars B（普及-） | 2 | 2 | 100.000% |
| 4761 | P6244 [USACO06OPEN] County Fair Events S（普及-） | 0 | 0 | 0.000% |
| 4768 | 【USACO2014OPEN】牧场装饰{bronze题3} | 1 | 3 | 33.333% |
| 4774 | P1588 [USACO07OPEN] Catch That Cow S（普及-） | 0 | 0 | 0.000% |
| 4780 | P4379 [USACO18OPEN] Lemonade Line S（普及-） | 1 | 1 | 100.000% |
| 4781 | P2909 [USACO08OPEN] Cow Cars S（普及-） | 0 | 0 | 0.000% |
| 4790 | P2908 [USACO08OPEN] Word Power S（普及-） | 3 | 4 | 75.000% |
| 4802 | P2952 [USACO09OPEN] Cow Line S（普及-） | 9 | 12 | 75.000% |
| 4810 | P9937 [USACO21OPEN] Acowdemia I B（普及-） | 0 | 0 | 0.000% |
| 4822 | P1700 [USACO19OPEN] Milk Factory B（普及-） | 0 | 0 | 0.000% |
| 4850 | P3142 [USACO16OPEN] Field Reduction S | 0 | 0 | 0.000% |
| 4851 | P3143 [USACO16OPEN] Diamond Collector S | 0 | 0 | 0.000% |
| 4852 | P3144 [USACO16OPEN] Closing the Farm S | 0 | 0 | 0.000% |
| 4853 | P3146 [USACO16OPEN] 248 G | 0 | 0 | 0.000% |
| 4862 | P6245 [USACO06OPEN] The Climbing Wall S | 0 | 0 | 0.000% |