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0.649是怎么选择得到的呢??

Posted by TangMing at 2009-07-21 15:12:15 on Problem 1018
1 3
3 100 25 150 35 80 25
2 120 80 155 40
2 100 100 120 110
min (B)/sum(P)..怎么得到0.649的呢

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