| 1328 | USACO 3.3.1 Riding The Fences 骑马修栅栏 | 1/1 | |
| 1329 | USACO 3.3.2 Shopping Offers 商店购物 | 1/1 | |
| 1330 | USACO 3.3.3 Camelot 亚瑟王的宫殿 | 0/1 | |
| 1331 | USACO 3.3.4 Home on the Range 家的范围 | 1/1 | |
| 1332 | USACO 3.3.5 A Game 游戏博弈 | 1/1 | |
| 1333 | USACO 3.4.1 American Heritage 美国血统 | 1/1 | |
| 1334 | USACO 3.4.2 Electric Fence 电网 | 1/1 | |
| 1335 | USACO 3.4.3 Raucous Rockers “破锣摇滚”乐队 | 1/1 | |
| 1336 | USACO 4.1.1 Beef McNuggets 麦香牛块 | 1/1 | |
| 1337 | USACO 4.1.2 Fence Loops 篱笆回路 | 1/1 | |
| 1338 | USACO 4.2.1 Drainage Ditches 草地排水 | 1/1 | |
| 1339 | USACO 4.2.2 The Perfect Stall 完美的牛栏 | 0/0 | |
| 1340 | USACO 4.2.3 Job Processing 工序安排 | 1/1 | |
| 1341 | USACO 4.3.1 Buy Low, Buy Lower 逢低吸纳 | 0/1 | |
| 1342 | USACO 4.3.2 Street Race 街道赛跑 | 1/1 | |
| 1343 | USACO 4.3.3 Letter Game 字母游戏 | 0/0 | |
| 1344 | USACO 4.4.1 Shuttle Puzzle 棋盘游戏 | 1/1 | |
| 1345 | USACO 4.4.2 Pollutant Control 追查坏牛奶 | 0/0 | |
| 1346 | USACO 4.4.3 Frame Up 重叠的图像 | 0/0 | |
| 1347 | USACO 5.1.1 Fencing the Cows 圈奶牛 | 0/0 | |
| 1348 | USACO 5.1.2 Starry Night 夜空繁星 | 0/1 | |
| 1349 | USACO 5.1.3 Musical Themes 乐曲主题 | 0/0 | |
| 1350 | USACO 5.2.1 Snail Trails 蜗牛的旅行 ? | 1/1 | |
| 1351 | USACO 5.3.1 Milk Measuring 量取牛奶 ? | 0/1 | |
| 1352 | USACO 5.3.2 Window Area 窗体面积 | 0/0 | |
| 1353 | USACO 5.3.3 Network of Schools 校园网 | 0/0 | |
| 1354 | USACO 5.3.4 Big Barn 巨大的牛棚 | 1/1 | |
| 1355 | USACO 5.4.1 Canada Tour 周游加拿大 | 0/1 | |
| 1356 | USACO 5.4.2 Character Recognition 字符识别 | 0/0 | |
| 1357 | USACO 5.4.3 Telecowmunication 奶牛的电信 | 0/0 | |
| 1358 | USACO 5.5.1 Picture 矩形周长 | 0/1 | |
| 1359 | USACO 5.5.2 Hidden Passwords 隐藏口令 | 0/0 | |
| 1360 | USACO 5.5.3 Two Five 二五语言 | 0/0 | |
| 1361 | USACO 6.1.1 Postal Vans 邮政卡车 | 1/1 | |
| 1362 | USACO 6.1.2 A Rectangular Barn 矩形牛棚 | 1/1 | |
| 1363 | USACO 6.1.3 Cow XOR 奶牛异或 | 0/1 | |
| 1364 | USACO 6.2.1 calf flac 最长的回文 | 0/1 | |
| 1365 | USACO 6.2.2 Packing Rectangles 铺放矩形块 | 0/0 | |
| 1366 | USACO 6.2.3 Shaping Regions形成的区域 | 0/1 | |
| 1367 | USACO 6.3.1 Fence Rails 栅栏的木料 | 0/1 | |
| 1368 | USACO 6.3.2 Cryptcowgraphy 解密牛语 | 0/0 | |
| 1369 | USACO 6.3.3 Cowcycles 奶牛自行车 | 0/1 | |
| 1370 | USACO 6.4.1 The Primes 素数方阵 | 0/0 | |
| 1371 | USACO 6.4.2 Electric Fences 电动栅栏 | 1/1 | |
| 1372 | USACO 6.4.3 Wisconsin Squares 威斯康星州的牧场 | 0/0 | |
| 1373 | USACO 6.5.1 All Latin Squares 拉丁正方形 | 0/1 | |
| 1374 | USACO 6.5.2 Closed Fences 闭合的栅栏 | 0/0 | |
| 1375 | USACO 6.5.3 Betsy's Tour 漫游小镇 | 1/1 | |
| 1376 | USACO 6.5.4 The Clocks 时钟数学 | 0/1 | |
| 1377 | USACO 6.5.5 Checker Challenge 跳棋的挑战 | 0/2 | |