Let $\mathrm{A}=\{-2,-1,0,1,2,3,4\}$. Let R be a relation on A defined by $x \mathrm{Ry}$ if and only if $2 x+y \leqslant 2$. Let $l$ be the number of elements in $\mathrm{R}_n$ Let m and n be the minimum number of elements required to be added in R to make it reflexive and symmetric relations respectively. Then $l+\mathrm{m}+\mathrm{n}$ is equal to :
