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给有迷惑WA的同学一点提示...

Posted by cug_fish2008 at 2009-05-29 12:01:03 on Problem 1650 
1.以分母为枚举对象
2.if(minv<1e-14)break；//minv为最小/a-N/D/，加上这条
3.minv是初始化应该大于10.0；
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