the route

来源: adamsmth 于 2008-09-30 08:04:20 [] [旧帖] [给我悄悄话] 阅读数 : (654 bytes)
本帖于 2008-10-02 14:54:46 时间, 由普通用户 康MM 编辑
回答: by the method of 康MM, the best result is 162.69 由 adamsmth 于 2008-09-30 06:25:56

A(0)---x2------x1----x3------x4----x6------x5----B(x7=1000)
|---t1-------->|~~~~~|~~~~~~~|~~~~~|~~~~~~~|~~~~~|
~~~~~~~| ~~~~~~~|--------t3-->|--t4-->|--------t5-->|~~~~~|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~|--------t7-->|

1. take #2,#3 to x1
2. back, pick up #5 and meet #4 at x2
3. meet #2, change #2 and #5 at x3
4. meet #3, change #3 and #4 at x4
5. leave #2,#3 at x5
6. back and meet #4,#5 at x6
7. all persons arrive B at same time

Note: if you repeat from t3 to t6 for N times, you can get better result.

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