大神们都在刷usaco，我也来水一水

1606: [Usaco2008 Dec]Hay For Sale 购买干草   裸背包

1607: [Usaco2008 Dec]Patting Heads 轻拍牛头 神转化，筛法

1609: [Usaco2008 Feb]Eating Together麻烦的聚餐  LIS

1610: [Usaco2008 Feb]Line连线游戏 sb题

1611: [Usaco2008 Feb]Meteor Shower流星雨  BFS

1612: [Usaco2008 Jan]Cow Contest奶牛的比赛 floyed

1614: [Usaco2007 Jan]Telephone Lines架设电话线 二分

1615: [Usaco2008 Mar]The Loathesome Hay Baler麻烦的干草打包机  DFS

1616: [Usaco2008 Mar]Cow Travelling游荡的奶牛 递推

1617: [Usaco2008 Mar]River Crossing渡河问题  DP

1618: [Usaco2008 Nov]Buying Hay 购买干草  背包

usaco silver