| 1604 | [Usaco2008 Open]Cow Neighborhoods 奶牛的邻居省选 | 0 |
| 1605 | [Usaco2008 Open]Crisis on the Farm 牧场危机省选 | 0 |
| 1606 | [Usaco2008 Dec]Hay For Sale 购买干草省选 | 0 |
| 1607 | [Usaco2008 Dec]Patting Heads 轻拍牛头省选 | 0 |
| 1608 | [Usaco2008 Dec]Jigsaw Puzzles 拼图省选 | 0 |
| 1609 | [Usaco2008 Feb]Eating Together麻烦的聚餐省选 | 1 |
| 1610 | [Usaco2008 Feb]Line连线游戏省选 | 0 |
| 1611 | [Usaco2008 Feb]Meteor Shower流星雨省选 | 0 |
| 1612 | [Usaco2008 Jan]Cow Contest奶牛的比赛省选 | 0 |
| 1613 | [Usaco2008 Jan]Running贝茜的晨练计划省选 | 1 |
| 1614 | [Usaco2007 Jan]Telephone Lines架设电话线省选 | 0 |
| 1615 | [Usaco2008 Mar]The Loathesome Hay Baler麻烦的干草打包机省选 | 0 |
| 1616 | [Usaco2008 Mar]Cow Travelling游荡的奶牛省选 | 0 |
| 1617 | [Usaco2008 Mar]River Crossing渡河问题省选 | 1 |
| 1618 | [Usaco2008 Nov]Buying Hay 购买干草省选 | 1 |
| 1619 | [Usaco2008 Nov]Guarding the Farm 保卫牧场省选 | 0 |
| 1620 | [Usaco2008 Nov]Time Management 时间管理省选 | 0 |
| 1621 | [Usaco2008 Open]Roads Around The Farm分岔路口省选 | 1 |
| 1622 | [Usaco2008 Open]Word Power 名字的能量省选 | 2 |
| 1623 | [Usaco2008 Open]Cow Cars 奶牛飞车省选 | 1 |
| 1624 | [Usaco2008 Open] Clear And Present Danger 寻宝之路省选 | 0 |
| 1625 | [Usaco2007 Dec]宝石手镯省选 | 0 |
| 1626 | [Usaco2007 Dec]Building Roads 修建道路省选 | 1 |
| 1627 | [Usaco2007 Dec]穿越泥地省选 | 0 |
| 1628 | [Usaco2007 Demo]City skyline省选 | 0 |
| 1629 | [Usaco2007 Demo]Cow Acrobats省选 | 0 |
| 1630 | [Usaco2007 Demo]Ant Counting省选 | 0 |
| 1631 | [Usaco2007 Feb]Cow Party省选 | 0 |
| 1632 | [Usaco2007 Feb]Lilypad Pond省选 | 0 |
| 1633 | [Usaco2007 Feb]The Cow Lexicon 牛的词典省选 | 0 |
| 1634 | [Usaco2007 Jan]Protecting the Flowers 护花省选 | 0 |
| 1635 | [Usaco2007 Jan]Tallest Cow 最高的牛省选 | 0 |
| 1636 | [Usaco2007 Jan]Balanced Lineup省选 | 2 |
| 1637 | [Usaco2007 Mar]Balanced Lineup省选 | 0 |
| 1638 | [Usaco2007 Mar]Cow Traffic 奶牛交通省选 | 0 |
| 1639 | [Usaco2007 Mar]Monthly Expense 月度开支省选 | 0 |
| 1640 | [Usaco2007 Nov]Best Cow Line 队列变换省选 | 3 |
| 1641 | [Usaco2007 Nov]Cow Hurdles 奶牛跨栏省选 | 0 |
| 1642 | [Usaco2007 Nov]Milking Time 挤奶时间省选 | 0 |
| 1643 | [Usaco2007 Oct]Bessie's Secret Pasture 贝茜的秘密草坪省选 | 0 |
| 1644 | [Usaco2007 Oct]Obstacle Course 障碍训练课省选 | 0 |
| 1645 | [Usaco2007 Open]City Horizon 城市地平线省选 | 1 |
| 1646 | [Usaco2007 Open]Catch That Cow 抓住那只牛省选 | 15 |
| 1647 | [Usaco2007 Open]Fliptile 翻格子游戏省选 | 0 |
| 1648 | [Usaco2006 Dec]Cow Picnic 奶牛野餐省选 | 0 |
| 1649 | [Usaco2006 Dec]Cow Roller Coaster省选 | 3 |
| 1650 | [Usaco2006 Dec]River Hopscotch 跳石子省选 | 1 |
| 1651 | [Usaco2006 Feb]Stall Reservations 专用牛棚省选 | 0 |
| 1652 | [Usaco2006 Feb]Treats for the Cows省选 | 2 |
| 1653 | [Usaco2006 Feb]Backward Digit Sums省选 | 0 |
