| 12345678910111213141516171819202122232425262728293031323334353637383940414243444546 |
- # SETS
- set I;
- param n;
- set J := 1..n;
- # PARAMS
- param b{J}; #Work days
- param d{I,J}; #Max demand
- param r{I}; #Revenues
- param c{I}; #Cost
- param q{I}; #Max production
- param f{I};
- param l{I};
- param m{I}; #Inventory cost
- param K;
- # VARIABLES
- var X{I,J} #Prod
- var V{I,J} #Sold
- var Z{I,J} #Store
- # OBJECTIVE FUNCTION
- mazimize Profit:
- sum{i in I,j in J} V[i]*r[i]-(c[i]X[i,j] + m[i]*Z[i,j])
-
- # CONSTRAINTS
- subject to MaxProdConstraint {j in J}:
- sum {i in I} Z[i,j] <= K
- subject to MaxSellConstraint {i in I, j in J}:
- V[i,j] <= d[i,j]
- subject to InventoryConstraint {i in I, j in J}:
- Z[i,j]-Z[i,j-1]+X[i,j]-V[i,j]
- subject to InitialProduction {i in I}:
- X[i,0] = 0
- subject to ConstantProduction {j in J}:
- sum{i in I} x[i][j] {x[i][j]}/{q[i]} <= b[j]
|
