Problem
Given an array of integers and a number X, print the index (0-based) of the first occurrence of X in the array. If X is not found, print -1.
Input format
Input
input.txt
- The first line contains a single integer N (1 ≤ N ≤ 100). - The second line contains N integers separated by spaces (-1000 ≤ Ai ≤ 1000). - The third line contains the integer X.
Output format
Output
output.txt
- The index of the first occurrence of X, or -1 if not found.
Example
input
5 4 2 7 9 2 2
output
1
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Sample cases (from the problem)
Sample Case 1
Input
5 4 2 7 9 2 2
Expected output
1
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