Question 25
For every positive integer $m$, we write $S(m)$ for the sum of its digits. For example, $S(2018) = 2+0+1+8=11$.
We say a positive integer $n$ is *rioplatense* if there is a positive integer $m$ such that $m + 2S(m) = n$.
Find all positive integers that are *rioplatenses*.
We say a positive integer $n$ is *rioplatense* if there is a positive integer $m$ such that $m + 2S(m) = n$.
Find all positive integers that are *rioplatenses*.