[QUE/QFT-14003] QFT-PROBLEM

$\newcommand{\matrixelement}[3]{\langle#1|#2|#3\rangle}$
$\newcommand{\Lsc}{\mathscr{L}}$
For a self coupled scalar theory with interaction Lagrangian density given by \begin{equation} \Lsc_{\text{int}}= \frac{\lambda}{3!}:\phi(x)^3: \end{equation} Compute \begin{eqnarray}  \int d^4y_1 \int d^4y_2\matrixelement{0}{T(\phi(x_1)\phi(x_2) \Lsc(y_1) \Lsc(y_2)}{0} \end{eqnarray}