回复：how many times will they meet.

来源: sufficient 于 2005-07-08 14:40:13 [] [旧帖] [给我悄悄话] 阅读数 : (100 bytes)

13, including the first and the last if cars from two stations start exactly the same times.

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• right, 13 -xyz100- ♂ 给 xyz100 发送悄悄话 (0 bytes) () 07/09/2005 postreply 18:50:14

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