To solve for $x,y,n$ in non-negative integers , $\dfrac{x!+y!}{n!}=p^n$ , $p$ a given prime

Question

Let $p$ be a given prime , then how do we find non-negative integers $(x,y,n)$ $\space$ , such that

$\dfrac{x!+y!}{n!}=p^n$ ?