[UVA][二分圖最大匹配] 10080 - Gopher II
[UVAProblem A: Gopher II
The gopher family, having averted the canine threat, must face a new
predator.
The are n gophers and m gopher holes, each at distinct
(x, y) coordinates. A hawk arrives and if a gopher does not reach a
hole in s seconds it is vulnerable to b...
