function err = KB12Fs(x)
%

F(1) = -0.9156+(1-x(2))+x(1)-(1-x(2))*x(1);
F(2) = -0.99925+(1-x(4))+(1-x(3))+(1-x(1))+x(2)+x(5)-(1-x(4))*(1-x(3))-(1-x(4))*(1-x(1))-(1-x(4))*x(2)-(1-x(4))*x(5)-(1-x(3))*(1-x(1))-(1-x(3))*x(2)-(1-x(3))*x(5)-(1-x(1))*x(2)-(1-x(1))*x(5)-x(2)*x(5)+(1-x(4))*(1-x(3))*(1-x(1))+(1-x(4))*(1-x(3))*x(2)+(1-x(4))*(1-x(3))*x(5)+(1-x(4))*(1-x(1))*x(2)+(1-x(4))*(1-x(1))*x(5)+(1-x(4))*x(2)*x(5)+(1-x(3))*(1-x(1))*x(2)+(1-x(3))*(1-x(1))*x(5)+(1-x(3))*x(2)*x(5)+(1-x(1))*x(2)*x(5)-(1-x(4))*(1-x(3))*(1-x(1))*x(2)-(1-x(4))*(1-x(3))*(1-x(1))*x(5)-(1-x(4))*(1-x(3))*x(2)*x(5)-(1-x(4))*(1-x(1))*x(2)*x(5)-(1-x(3))*(1-x(1))*x(2)*x(5)+(1-x(4))*(1-x(3))*(1-x(1))*x(2)*x(5);
F(3) = -0.99982+(1-x(4))+x(2)+x(3)-(1-x(4))*x(2)-(1-x(4))*x(3)-x(2)*x(3)+(1-x(4))*x(2)*x(3);
F(4) = -0.57373+(1-x(1))+x(5)-(1-x(1))*x(5);
err = norm(F);
