1656: [Usaco2006 Jan] The Grove 树木

Time Limit: 5 Sec  Memory Limit: 64 MB Submit: 143  Solved: 88 [Submit][Status][Discuss]

Description

The pasture contains a small, contiguous grove of trees that has no 'holes' in the middle of the it. Bessie wonders: how far is it to walk around that grove and get back to my starting …