function F = KBg87F(x)
%

F(1) = -0.90642 + (1-x(5)) + x(3) + x(4) - x(6)*x(4) - x(7)*x(3) - x(7)*x(4) + x(7)*x(6)*x(4);
F(2) = -0.76491 + (1-x(1)) + x(4) - x(8)*x(4);
F(3) = -0.88904 + x(1) + x(4) + x(5) - x(9)*x(5) - x(10)*x(4) - x(10)*x(5) + x(10)*x(9)*x(5);
F(4) = -0.49915 + (1-x(1));
F(5) = -0.48067 + (x(4));
F(6) = -0.86583 + (1-x(5)) + (1-x(3)) + x(2) - x(11)*x(2) - x(12)*(1-x(3)) - x(12)*x(2) + x(12)*x(11)*x(2);
F(7) = -0.74578 + (1-x(3)) + (1-x(2)) - x(12)*(1-x(2));
F(8) = -0.44267 + (x(3));
F(9) = -0.83556 + (1-x(5)) + (1-x(2)) + x(4) - x(13)*x(4) - x(14)*(1-x(2)) - x(14)*x(4) + x(14)*x(13)*x(4);
F(10) = -0.89794 + x(2) + x(4) + x(5) - x(15)*x(5) - x(16)*x(4) - x(16)*x(5) + x(16)*x(15)*x(5);
F(11) = -0.83467 + (1-x(2)) + x(3) + x(4) - x(17)*x(4) - x(18)*x(3) - x(18)*x(4) + x(18)*x(17)*x(4);
F(12) = -0.73966 + x(2) + x(4) - x(18)*x(4);
F(13) = -0.70823 + (1-x(2)) + x(5) - x(19)*x(5);
