| 
          
         | 
        4155 | 
                
              P1591
  [Usaco2008 Dec]Largest Fence 最大的围栏
         | 
        0 / 0 | 
        (无) | 
      
      
        | 
          
         | 
        4156 | 
                
              P1592
  [Usaco2008 Feb]Making the Grade 路面修整
         | 
        0 / 0 | 
        (无) | 
      
      
        | 
          
         | 
        4157 | 
                
              P1593
  [Usaco2008 Feb]Hotel 旅馆
         | 
        0 / 0 | 
        (无) | 
      
      
        | 
          
         | 
        4158 | 
                
              P1594
  [Usaco2008 Jan]猜数游戏
         | 
        0 / 0 | 
        (无) | 
      
      
        | 
          
         | 
        4159 | 
                
              P1595
  [Usaco2008 Jan]人工湖
         | 
        0 / 0 | 
        (无) | 
      
      
        | 
          
         | 
        4160 | 
                
              P1596
  [Usaco2008 Jan]电话网络
         | 
        0 / 0 | 
        (无) | 
      
      
        | 
          
         | 
        4161 | 
                
              P1598
  [Usaco2008 Mar]牛跑步
         | 
        0 / 0 | 
        (无) | 
      
      
        | 
          
         | 
        4162 | 
                
              P1600
  [Usaco2008 Oct]建造栅栏
         | 
        0 / 0 | 
        (无) | 
      
      
        | 
          
         | 
        4163 | 
                
              P1602
  [Usaco2008 Oct]牧场行走
         | 
        0 / 0 | 
        (无) | 
      
      
        | 
          
         | 
        4164 | 
                
              P1603
  [Usaco2008 Oct]打谷机
         | 
        0 / 0 | 
        (无) | 
      
      
        | 
          
         | 
        4165 | 
                
              P1604
  [Usaco2008 Open]Cow Neighborhoods 奶牛的邻居
         | 
        0 / 0 | 
        (无) | 
      
      
        | 
          
         | 
        4166 | 
                
              P1605
  [Usaco2008 Open]Crisis on the Farm 牧场危机
         | 
        0 / 0 | 
        (无) | 
      
      
        | 
          
         | 
        4167 | 
                
              P1606
  [Usaco2008 Dec]Hay For Sale 购买干草
         | 
        0 / 0 | 
        (无) | 
      
      
        | 
          
         | 
        4168 | 
                
              P1607
  [Usaco2008 Dec]Patting Heads 轻拍牛头
         | 
        0 / 0 | 
        (无) | 
      
      
        | 
          
         | 
        4169 | 
                
              P1608
  [Usaco2008 Dec]Jigsaw Puzzles 拼图
         | 
        0 / 0 | 
        (无) | 
      
      
        | 
          
         | 
        4170 | 
                
              P1609
  [Usaco2008 Feb]Eating Together麻烦的聚餐
         | 
        0 / 0 | 
        (无) | 
      
      
        | 
          
         | 
        4171 | 
                
              P1610
  [Usaco2008 Feb]Line连线游戏
         | 
        0 / 0 | 
        (无) | 
      
      
        | 
          
         | 
        4172 | 
                
              P1611
  [Usaco2008 Feb]Meteor Shower流星雨
         | 
        0 / 0 | 
        (无) | 
      
      
        | 
          
         | 
        4173 | 
                
              P1612
  [Usaco2008 Jan]Cow Contest奶牛的比赛
         | 
        0 / 0 | 
        (无) | 
      
      
        | 
          
         | 
        4174 | 
                
              P1613
  [Usaco2008 Jan]Running贝茜的晨练计划
         | 
        0 / 4 | 
        10 |