#include <iostream>
#include <fstream>
using namespace std;

ifstream f ("elmaj.in");
ofstream g ("elmaj.out");

int n, a[1000001], i, x, k, j;

int main()
{
    f >> n;
    for (i=1; i<=n; i++)
        f >> a[i];

    for (i=1; i<=n; i++)
    {
        f >> a[i];
        k = 0;
        for (j=1; j<=n; j++)
            if (a[i] == a[j])
            {
                k++;
                x = a[i];
            }
    }

    if (k >= n/2+1)
        g << x << " " << k;
    else
        g << -1;

    return 0;
}