Usaco2006

1726: [Usaco2006 Nov]Roadblocks第二短路 Time Limit: 5 Sec  Memory Limit: 64 MBSubmit: 835  Solved: 398[Submit][Status] Description 贝茜把家搬到了一个小农场，...

1726: [Usaco2006 Nov]Roadblocks第二短路 Description 贝茜把家搬到了一个小农场，但她常常回到FJ的农场去拜访她的朋友。贝茜很喜欢路边的风景，不想那么快地结束她的旅途，于是她每次回农场，都会选择第二短的...

从起点和终点各跑一次最短路 , 然后枚举每一条边 , 更新answer ----------------------------------------------------------------------------------------------------- #include<cstdio> #include<...

1726: [Usaco2006 Nov]Roadblocks第二短路 Time Limit: 5 Sec  Memory Limit: 64 MBSubmit: 768  Solved: 369[Submit][Status] Description 贝茜把家搬到了一个小农场，...

1726: [Usaco2006 Nov]Roadblocks第二短路 Time Limit: 5 Sec  Memory Limit: 64 MBSubmit: 969  Solved: 468[Submit][Status][Discuss] Description 贝茜把家搬到了一...

Description The cows are having a picnic! Each of Farmer John's K (1 <= K <= 100) cows is grazing in one of N (1 <= N <= 1,000) pastures, conveniently numbered 1...N. The pastures are c...

1648: [Usaco2006 Dec]Cow Picnic 奶牛野餐 Time Limit: 5 Sec  Memory Limit: 64 MBSubmit: 432  Solved: 270[Submit][Status] Description The cows are having a pic...

直接从每个奶牛所在的farm dfs , 然后算一下.. ---------------------------------------------------------------------------------------- #include<cstdio> #include<algorithm> #include<cs...

1648: [Usaco2006 Dec]Cow Picnic 奶牛野餐 Time Limit: 5 Sec  Memory Limit: 64 MBSubmit: 554  Solved: 346[Submit][Status][Discuss] Description The cows are hav...