Let $x=-1$ and $x=2$ be the critical points of the function $f(x)=x^{3}+ax^{2}+b\log_{e}|x|+1,;x\neq0$. Let $m$ and $M$ respectively be the absolute minimum and the absolute maximum values of $f$ in the interval $\left[-2,-\dfrac{1}{2}\right]$. Then $|M+m|$ is equal to (take $\log_{e}2=0.7$):