| 
          
         | 
        249 | 
                
              249
  [USACO13JAN]Square Overlap S
         | 
        0 / 0 | 
        (无) | 
      
      
        | 
          
         | 
        5035 | 
                
              P1522
  [USACO2.4] 牛的旅行 Cow Tours
         | 
        4 / 4 | 
        10 | 
      
      
        | 
          
         | 
        4768 | 
                
              P1879
  [USACO06NOV] Corn Fields G
         | 
        1 / 1 | 
        10 | 
      
      
        | 
          
         | 
        5101 | 
                
              P2742
  [USACO5.1] 圈奶牛Fencing the Cows /【模板】二维凸包
         | 
        0 / 0 | 
        (无) | 
      
      
        | 
          
         | 
        5058 | 
                
              P2746
  [USACO5.3] 校园网Network of Schools
         | 
        0 / 0 | 
        (无) | 
      
      
        | 
          
         | 
        4822 | 
                
              P2852
  [USACO06DEC] Milk Patterns G
         | 
        0 / 0 | 
        (无) | 
      
      
        | 
          
         | 
        5049 | 
                
              P2872
  [USACO07DEC] Building Roads S
         | 
        2 / 2 | 
        10 | 
      
      
        | 
          
         | 
        4968 | 
                
              P2880
  [USACO07JAN] Balanced Lineup G
         | 
        0 / 0 | 
        (无) | 
      
      
        | 
          
         | 
        4786 | 
                
              P2900
  [USACO08MAR] Land Acquisition G
         | 
        0 / 0 | 
        (无) | 
      
      
        | 
          
         | 
        5030 | 
                
              P2921
  [USACO08DEC] Trick or Treat on the Farm G
         | 
        1 / 2 | 
        10 | 
      
      
        | 
          
         | 
        4808 | 
                
              P2922
  [USACO08DEC] Secret Message G
         | 
        0 / 0 | 
        (无) | 
      
      
        | 
          
         | 
        239 | 
                
              P3021
  [USACO13JAN]Square Overlap S
         | 
        1 / 4 | 
        10 | 
      
      
        | 
          
         | 
        254 | 
                
              P3026
  [USACO2.3]最长前缀 Longest Prefix
         | 
        0 / 2 | 
        10 | 
      
      
        | 
          
         | 
        255 | 
                
              P3027
  [USACO2.3]零的数列 Zero Sum
         | 
        0 / 0 | 
        (无) | 
      
      
        | 
          
         | 
        284 | 
                
              P3056
  [USACO06JAN]The Cow Prom S
         | 
        3 / 3 | 
        10 | 
      
      
        | 
          
         | 
        285 | 
                
              P3057
  [USACO03FALL / HAOI2006] 受欢迎的牛 G
         | 
        0 / 0 | 
        (无) | 
      
      
        | 
          
         | 
        286 | 
                
              P3058
  [USACO4.2]草地排水Drainage Ditches
         | 
        0 / 0 | 
        (无) | 
      
      
        | 
          
         | 
        4809 | 
                
              P3065
  [USACO12DEC] First! G
         | 
        0 / 0 | 
        (无) | 
      
      
        | 
          
         | 
        4782 | 
                
              P3089
  [USACO13NOV] Pogo-Cow S
         | 
        0 / 0 | 
        (无) | 
      
      
        | 
          
         | 
        4771 | 
                
              P3092
  [USACO13NOV] No Change G
         | 
        0 / 0 | 
        (无) |