shortest path problem

例句：

1. 1.The shortest path to the nearest hospital is through the park.
   最近的医院最近的公园是最短的路径。
2. 2. In this problem, we need to find the shortest path that avoids obstacles.
   在这个问题上，我们需要找到一条避开障碍物的最短路径。
3. 3. The shortest path between two points on a map is usually the straight line connecting them.
   地图上两点之间的最短路径通常是连接它们的直线。