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谁告诉你汇率可以等于0了?

Posted by sideman at 2010-09-19 17:39:47 on Problem 1860
In Reply To:Re:是啊。负环没经过S也能过!!! Posted by:bigeyex at 2010-04-05 21:14:45
> 注意楼上的数据e21=0.0,也就是说根本不可能兑换回第一种货币!这数据够阴的,如果出这数据不知多少人会WA了。题目加上“汇率大于0”会简单一些。

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