摘要：
Fiber CommunicationsTime Limit:1000MSMemory Limit:30000KTotal Submissions:3804Accepted:1160DescriptionFarmer John wants to connect his N (1 <= N <= 1,000) barns (numbered 1..N) with a new fiber-optic network. However, the barns are located in a circle around the edge of a large pond, so he can 阅读全文