| dbp:code
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- buy[r] >= sum{p in Prod} ProdReq[r,p] * amountprod[p, s]; (en)
- var amountprod{p in Prod, s in Scen} >= 0, (en)
- var amountsell{p in Prod, s in Scen} >= 0, (en)
- var buy{r in Resource} >= 0, (en)
- production{p in Prod, s in Scen}: amountsell[p,s] <= amountprod[p,s]; (en)
- budgetres: sum{r in Resource} Cost[r] * buy[r] <= Budget; (en)
- sales{p in Prod, s in Scen}: amountsell[p,s] <= Demand[p,s]; (en)
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