- 貓朋Lv 51 十年 前最佳解答
搵出最短路徑 (不一定是最短距離)(Minimal path, not minimal distance)，要根據方向，坡度及地質等因素決定。
2006-12-24 18:26:19 補充：
Actually, I have not given the exact answer. In fact, this is a civil engineering design problem and the term "cost" is always very difficult to be formulated in math.
- 1 十年 前