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You will be given an array **A** of **N** non-negative integers. Your task is to find the rightmost non-zero digit in the product of array elements.

**Example 1:**

Input:N = 4, A = {3, 23, 30, 45}Output:5Explanation:Product of these numbers are 93150.Rightmost non-zero digit is 5.

**Example 2:**

Input:N = 5, A = {1, 2, 3, 4, 5}Output:2Explanation:Product of these numbers are 120. Rightmost non-zero digit is 2.

**Your Task:**

You don't need to read input or print anything. Your task is to complete the function rightmostNonZeroDigit() which takes an array A and returns the rightmost non-zero digit in the product of array elements, if there is no right most non zero digit, then return -1.

**Expected Time Complexity:** O(N*logN)

**Expected Auxiliary Space:** O(N)

**Constraints:**

1 ≤ N ≤ 10^{5}

0 ≤ A[i] ≤ 10^{5}

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Right most non zero digit

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