Problem
Given an array of N integers and a value X, find the 0-based index of the last occurrence of X in the array using recursion. If X is not present, print -1.
Input format
Input
input.txt
- The first line contains an integer N (1 ≤ N ≤ 50) - The second line contains N integers (each between -1000 and 1000) - The third line contains the integer X
Output format
Output
output.txt
- The index of the last occurrence of X in the array, or -1 if not found
Example
input
5 1 2 3 2 4 2
output
3
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Sample cases (from the problem)
Sample Case 1
Input
5 1 2 3 2 4 2
Expected output
3
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