Check quantity of all received products or re-checkweight, check whether quantity of delivered goods accord with ordered quantity, purchased price accord with quoted price.
对所有的原料查点数量或复核重量，核对交货数量是否与请购数量一致。
2
You could construct all subsets, check that the weight is less than the weight of the knapsack, and then choose the subset with the maximum value.
你可以构建所有子集，检查重量是否小于背包的重量，然后选择最大值的子集。
3
And so you could construct all subsets, check that the weight is less than the weight of the knapsack, and then choose the subset with the maximum value.