A rigid-jointed portal frame, shown in the figure, consists of beam and columns of equal length \(L\). The frame has a fixed support at one end and a roller support at the other end. The frame is subjected to a uniformly distributed load \(w\) and a lateral load \(P\) as shown in the figure. The plastic moment capacity of the beam and column sections is \(M_p\). Consider a combined beam-column mechanism for plastic collapse. By applying the virtual work equation corresponding to the combined plastic collapse mechanism, \(M_p\) is expressed as
\[ M_p = C_1 P L + C_2 w L^2 \]
where \(C_1\) and \(C_2\) are constants.
The value of \((C_1/C_2)\) is ______ (in integer).