Bloodline:
博客地址：https://www.cnblogs.com/Bloodline/
Bloodline:
博客地址：https://www.cnblogs.com/Bloodline/
bzoj3301: [USACO2011 Feb] Cow Line
bzoj4745: [Usaco2016 Dec]Cow Checklist
BZOJ1742[Usaco2005 nov]Grazing on the Run 边跑边吃草
bzoj2809: [Apio2012]dispatching