min=3*C11+3.5*C12+4*C13+3.4*C22+3.9*C23+3.8*C33+2.5*B11+2.9*B12+3.3*B13+2.8*B22+3.2*B23+3.4*B33;
C11>=40;
B11>=20;
C12+C22>=30;
B12+B22>=30;
C13+C23+C33>=20;
B13+B23+B33>=10;
C11+B11<=65;
C22+B22<=65;
B33+C33<=65;