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Problem
A majority element in an array of size N is an element that appears more than N/2 times. Find and print the majority element, or -1 if none exists. Use pointers.
Input format
Input
input.txt
- First line: integer N (1 ≤ N ≤ 100) - Second line: N space-separated integers
Output format
Output
output.txt
- Integer: the majority element or -1
Example
input
5 2 2 1 2 3
output
2
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Sample cases (from the problem)
Sample Case 1
Input
5 2 2 1 2 3
Expected output
2
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