Given the following C++ code snippet, what is the value of x ? Your answer must be exact. \[ \begin{array}{l} \text { int } x, y, z ; \\ \text { int *p_y } y=\& y ; \\ \text { int *p_z }=8 z ; \\ \text { *p_y }=9 ; \\ \text { *p_z }=2 ; \\ x=* p_{-} y * * p_{-z} z \end{array} \]