OPTIONS{
numloc: 0;   //no local search during preprocessing
}

MODULE: NLP;
BINARY_VARIABLES x1,x2,x3,x4,x5;
EQUATION e1;

e1: x1+x2+x3+x4+x5 == 3;

OBJ: minimize -((12+12*x2+8*x3+8*x4+4*x5)/(3+2*x1+x2+2*x4))
              -((36+x1+24*x2+96*x3)/(3+x1+2*x2+5*x3+x4))
              -((72+8*x1+56*x2+104*x5)/(3+3*x1+4*x2+2*x4+7*x5));