mino=8y1+162+12Jy3 y1+42 ≥2 2y1 +43≥3 1,y2,Jy3≥01 2 12168min 3 ω = + + yyy ⎪ ⎩ ⎪ ⎨ ⎧ ≥ ≥+ ≥+ oyyy yy yy 321 1 3 21 ,, 342 24