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这种建议自己测试一下

Posted by hawk at 2004-11-05 20:19:35 on Problem 1984
In Reply To:数据是不是会出现这种情况 除了第一组 F1，F2，LENGTH，D，之外是不是还会存在F1，F2在前面组都没出现 Posted by:tianhxk at 2004-11-05 19:57:48 
> 也就是说有没有可能出现下述数据
> 4 3
> 1 2  10 E
> 3 4   9  S
> 2 3   3 N
> 1
> 2 3 2
> 输出　　－１
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