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惊现牛人发帖

Posted by wywcgs at 2009-02-11 16:15:53 on Problem 1860
In Reply To:一组测试数据 Posted by:MagicDLF at 2009-02-11 16:09:50 
> Input
> 3 2 1 20.0
> 1 2 1.00 0.00 1.00 1000.00
> 2 3 1.01 0.00 1.01 0.00
> 
> Output
> YES
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