| ID | Problem Show tags Hide tags | AC / Tried | Difficulty | |
|---|---|---|---|---|
| 1321 | USACO1411 麦乐牛块 | 1 / 1 | 10 | |
| 1323 | USACO1412 围栏圈 | 1 / 1 | 10 | |
| 1325 | USACO1421 排水沟 | 1 / 1 | 10 | |
| 1326 | USACO1422 完美牛棚 | 1 / 1 | 10 | |
| 1327 | USACO1423 产品处理 | 1 / 1 | 10 | |
| 1328 | USACO1424 牛圈 | 0 / 0 | (None) | |
| 1329 | USACO1431 低买 | 1 / 1 | 10 | |
| 1331 | USACO1433 街头竞速 | 1 / 1 | 10 | |
| 1332 | USACO1434 字母游戏 | 1 / 2 | 10 | |
| 1333 | USACO1441 穿梭谜题 | 1 / 1 | 10 | |
| 1334 | USACO1442 控制污染奶 | 1 / 1 | 10 | |
| 1335 | USACO1443 堆叠相框 | 1 / 3 | 10 | |
| 1336 | USACO1511 围住奶牛 | 1 / 2 | 10 | |
| 1337 | USACO1512 星空之夜 | 1 / 1 | 10 | |
| 1338 | USACO1513 音乐主题 | 1 / 1 | 10 | |
| 1339 | USACO1521 蜗牛漫步 | 0 / 0 | (None) | |
| 1342 | USACO1531 牛奶量取 | 1 / 1 | 10 | |
| 1343 | USACO1532 窗口面积 | 1 / 1 | 10 | |
| 1344 | USACO1533 学校网络 | 3 / 5 | 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 | |
| 767 | USACO2228 果壳游戏 | 3 / 4 | 10 |