max: 80*x+96*y;
ovo: 6*x+4*y<=40;
trigo: 500*x+500*y<=5000;
cenoura: 140*x<=1000;
oleo: 250*x+250*y<=2000;
acucar:300*x+300*y<=5000;
fermento:30*x+30*y<=500;
leiteC:395*x+395*y<=3000;
cremeL:200*x+200*y<=1800;
chocolateP:20*x+270*y<=1000;
gas:300*x+300*y<=13000;
guardanapo: 16*x+16*y<=120;
tempoP:0.67*x+0.67*y<=5;
preferencia: x=2y;
int x;
int y;