ok, but

来源: 于 2008-10-09 16:23:13 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

First of all, my solution is better

Second of all, I proved it to be optimal, strictly

Third of all, I gave a family of solutions and

Last of all, after reading KangMM's solution, I identified that her optimal conditions are over strict, in that it is not necessary when the car is moving ahead, it has to carry 3 people as much as possible.