[Choco-users] Minimize a sum..

[Arnaud G. <ar...@im...>]

Hi list,
(first post)

I would like to minimize something like : min Sum(i=1:p,j=1:c,l=0:d)X(i,j,l)
and I don't know if I need to create an Array for my OBJECTIVE variable...

this is what I did:

1/
=> I have created my Variables, set up and add it to the model...
IntegerVariable[][][] X = new IntegerVariable[p][c][d];
...
X[i][j][k] = Choco.makeIntVar("X[" + i + "," + j + "," + k + "]", 0, 1);
cp.addVariable(X[i][j][k]);

2/ I then add my constraints
...

3/ I don't know how to create my objective variable...
since it is a sum, do I have to create an array ?

  IntegerVariable[][][] Z = new IntegerVariable[p][c][d];
        for (i) {
            for (j) {
                for (l) {
                    Z[i][j][l] = Choco.makeIntVar("Z[" + i + "," + j + "," +
l + "]", Options.V_OBJECTIVE);
                    cp.addVariable(Z[i][j][l]);
                }
            }
        }


        for (i) {
            for (j) {
                for (l) {
                    cp.addConstraint(eq(Z[i][j][l],X[i][j][l]));
                }
            }
        }

        Solver s = new CPSolver();
        s.read(cp);
        s.minimize(true);