// C++ program to find the element
// occurring odd number of times
#include<bits/stdc++.h>
using namespace std;
// Function to find the element
// occurring odd number of times
int getOddOccurrence(int arr[], int arr_size)
{
for (int i = 0; i < arr_size; i++) {
int count = 0;
for (int j = 0; j < arr_size; j++)
{
if (arr[i] == arr[j])
count++;
}
if (count % 2 != 0)
return arr[i];
}
return -1;
}
// driver code
int main()
{
int arr[] = { 2, 3, 5, 4, 5, 2,
4, 3, 5, 2, 4, 4, 2 };
int n = sizeof(arr) / sizeof(arr[0]);
// Function calling
cout << getOddOccurrence(arr, n);
return 0;
}