[LeetCode] Preimage Size of Factorial Zeroes Function

793. Preimage Size of Factorial Zeroes Function Let f(x) be the number of zeroes at the end of x!. Recall that x! = 1 * 2 * 3 * … * x and by convention, 0! = 1. For example, f(3) = 0 because 3! = 6 has no zeroes at the end, while f(11) = 2 because 11! = 39916800 has two zeroes at the end. Given an integer k, return the number of non-negative integers x have the property that f(x) = k. ...

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