Let $f(x)$ be the number of trailing zeroes in the decimal representation of $x!$. Given an integer k, return the count of non negative integers x for which $f(x) = $ k.

Note: The factorial of a non negative integer $x$, denoted as $x!$, is the product of all positive integers less than or equal to $x$, with $0! = 1$.

Constraints:

• $0 \leq$ k $\leq 10^9$

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