1.
If the determinant
a+pl+xu+fb+qm+yv+gc+rn+zw+h\begin{vmatrix} a+p & l+x & u+f \\ b+q & m+y & v+g \\ c+r & n+z & w+h \end{vmatrix}
splits into exactly KK determinants of order 3, each element of which contains only one term, then the value of KK is -