| 1547 | 【基础】黑色星期五（friday） | 2/2 | |
| 1732 | 【基础】跳房子 | 1/1 | |
| 1756 | 【提高】谷仓的安保 | 0/0 | |
| 1841 | 【基础】愤怒的奶牛 | 2/2 | |
| 1848 | 【基础】探测池塘 | 1/1 | |
| 1849 | 【基础】相似的奶牛 | 1/1 | |
| 1850 | 【基础】数字三角形 | 1/1 | |
| 1851 | 【基础】麦香牛肉 | 0/0 | |
| 1857 | 【提高】立方体积木Cube Stacking | 0/0 | |
| 1860 | 【基础】最短网络 Agri-Net（USACO3.1） | 1/1 | |
| 1862 | 【基础】Out of Hay S[USACO05MAR] | 1/1 | |
| 1868 | 【基础】贪婪的送礼者Greedy Gift Givers(USACO1.1) | 2/2 | |
| 1869 | 【基础】回文平方数 Palindromic Squares | 3/3 | |
| 1870 | 【基础】双重回文数 Dual Palindromes | 1/1 | |
| 1871 | 【基础】混合牛奶 Mixing Milk | 3/3 | |
| 1872 | 【基础】修理牛棚 Barn Repair | 1/1 | |
| 1873 | 【提高】回文质数 Prime Palindromes | 0/0 | |
| 1874 | 【基础】特殊的质数肋骨 Superprime Rib | 1/1 | |
| 1875 | 【基础】集合 Subset Sums | 1/1 | |
| 2020 | 【基础】回家 Bessie Come Home | 1/1 | |
| 2042 | 【入门】卫星照片 USACO 2005 NOV | 2/2 | |
| 2068 | Checker Challenge | 0/0 | |
| 2099 | Riding the Fences | 0/0 | |
| 2100 | Shopping Offers | 0/0 | |
| 2101 | Camelot | 0/0 | |
| 2102 | Home on the Range | 0/0 | |
| 2103 | A Game | 0/0 | |
| 2104 | Closed Fences | 0/0 | |
| 2105 | American Heritage | 0/0 | |
| 2106 | Electric Fence | 0/0 | |
| 2107 | Raucous Rockers | 0/0 | |
| 2108 | Beef McNuggets | 0/0 | |
| 2109 | Fence Rails | 0/0 | |
| 2110 | Fence Loops | 0/0 | |
| 2111 | Cryptcowgraphy | 0/0 | |
| 2112 | Drainage Ditches | 0/0 | |
| 2113 | The Perfect Stall | 0/0 | |
| 2114 | Job Processing | 0/0 | |
| 2115 | Cowcycles | 0/0 | |
| 2116 | Buy Low, Buy Lower | 0/0 | |
| 2117 | The Primes | 0/0 | |
| 2118 | Street Race | 0/0 | |
| 2119 | Letter Game | 0/0 | |
| 2120 | Shuttle Puzzle | 0/0 | |
| 2121 | Pollutant Control | 0/0 | |
| 2122 | Frame Up | 0/0 | |
| 2123 | Fencing the Cows | 0/0 | |
| 2124 | Starry Night | 0/0 | |
| 2125 | Musical Themes | 0/0 | |
| 2126 | Snail Trails | 0/0 | |
| 2127 | Electric Fences | 0/0 | |
| 2128 | Wisconsin Squares | 0/0 | |
| 2129 | Milk Measuring | 0/0 | |
| 2130 | Window Area | 0/0 | |
| 2131 | Network of Schools | 0/0 | |
| 2132 | Big Barn | 0/0 | |
| 2133 | All Latin Squares | 0/0 | |
| 2134 | Canada Tour | 0/0 | |
| 2135 | Character Recognition | 0/0 | |
| 2136 | Betsy's Tour | 0/0 | |
| 2137 | Telecowmunication | 0/0 | |
| 2138 | Picture | 0/0 | |
| 2139 | Hidden Password | 0/0 | |
| 2140 | Towfive | 0/0 | |