| ID | Problem Show tags Hide tags | AC / Tried | Difficulty | |
|---|---|---|---|---|
| 1344 | USACO1533 学校网络 | 1 / 1 | 10 | |
| 1345 | USACO1534 巨大牛棚 | 1 / 1 | 10 | |
| 1347 | USACO1542 加拿大之旅 | 1 / 1 | 10 | |
| 1348 | USACO1543 字符识别 | 0 / 0 | (None) | |
| 1350 | USACO1545 奶牛通信 | 1 / 1 | 10 | |
| 1351 | USACO1551 海报 | 1 / 1 | 10 | |
| 1352 | USACO1552 隐藏密码 | 1 / 1 | 10 | |
| 1353 | USACO1553 二五 | 1 / 1 | 10 | |
| 1354 | USACO1611 邮政货车 | 1 / 1 | 10 | |
| 1355 | USACO1612 矩形牛棚 | 1 / 1 | 10 | |
| 1356 | USACO1613 牛异或 | 1 / 1 | 10 | |
| 1398 | USACO1622 包装矩形 | 1 / 1 | 10 | |
| 1303 | USACO1623 塑造区域 | 1 / 1 | 10 | |
| 1399 | USACO1631 栅栏围栏 | 1 / 2 | 10 | |
| 1324 | USACO1632 牛的密码学 | 1 / 2 | 10 | |
| 1330 | USACO1641 质数方阵 | 1 / 1 | 10 | |
| 1340 | USACO1642 通电围栏 | 1 / 1 | 10 | |
| 1341 | USACO1643 威斯康星方形牧场 | 1 / 1 | 10 | |
| 1346 | USACO1651 拉丁矩阵 | 1 / 1 | 10 | |
| 1349 | USACO1653 贝特西之旅 | 1 / 1 | 10 | |
| 1400 | USACO1654 时钟 | 1 / 1 | 10 | |
| 1401 | USACO1655 棋盘挑战 | 1 / 2 | 10 | |
| 1317 | USACO1662 封闭围栏 | 0 / 0 | (None) | |
| 761 | USACO2216 混合牛奶 | 3 / 4 | 10 | |
| 762 | USACO2217 桶列表 | 3 / 6 | 10 | |
| 763 | USACO2218 来回 | 3 / 5 | 10 | |
| 764 | USACO2219 大会 | 2 / 4 | 10 | |
| 765 | USACO2220 大会 II | 2 / 4 | 10 | |
| 766 | USACO2221 哞呦哞呦 | 2 / 3 | 10 | |
| 2901 | USACO2222 美食 | 2 / 4 | 6 | |
| 2902 | USACO2223 牛的和谐共处 | 2 / 4 | 6 | |
| 2919 | USACO2224 团队合作 | 6 / 7 | 3 | |
| 767 | USACO2228 果壳游戏 | 3 / 4 | 10 | |
| 768 | USACO2229 困牛排序 | 4 / 9 | 9 | |
| 769 | USACO2230 猜动物 | 3 / 4 | 10 | |
| 771 | USACO2231 种草 | 2 / 4 | 10 | |
| 772 | USACO2232 冰的周长 | 2 / 5 | 10 | |
| 773 | USACO2233 山顶风光 | 2 / 3 | 10 | |
| 2920 | USACO2234 Cow Poetry G | 2 / 2 | 6 | |
| 2921 | USACO2235 Sleepy Cow Sorting G | 2 / 3 | 6 | |
| 2922 | USACO2236 Shortcut G | 2 / 3 | 7 | |
| 774 | USACO2240 困牛放牧 | 3 / 9 | 10 | |
| 775 | USACO2241 大型植被恢复 | 3 / 5 | 10 | |
| 776 | USACO2242 流量交通 | 3 / 5 | 10 | |
| 777 | USACO2243 困牛放牧 | 2 / 6 | 10 | |
| 778 | USACO2244 谷仓刷漆 | 2 / 9 | 10 | |
| 779 | USACO2245 大型植被恢复 | 2 / 6 | 10 | |
| 2923 | USACO2246 牛乐园 | 2 / 4 | 7 | |
| 2924 | USACO2247 洗盘子 | 2 / 2 | 7 | |
| 2925 | USACO2248 谷仓刷漆 | 2 / 3 | 7 |