Let $A = \{ 1,2,3,4,5\}$. Let $R$ be a relation on $A$ defined by $xRy$ if and only if $4x \leq 5y$. Let $m$ be the number of elements in $R$ and $n$ be the minimum number of dements from $A \times A$ that are required to be added to $R$ to make it a symmetric relation. Then $m + n$ is equal to: