#include <iostream>
#include <fstream>
#include <algorithm>
using namespace std;
ifstream fin("elmaj.in");
ofstream fout("elmaj.out");
#define MAX 1000100

int a[MAX];
int main()
{
    int el, s = 0, n, i;
    fin >> n;
    for(i = 1 ; i <= n ; i++)
    {
        fin >> a[i];
    }
    nth_element(a + 1, a + (n + 1) / 2 + 1, a + n + 1);
    el = a[(n + 1) / 2];
    for(i = 1 ; i <= n ; i++)
    {
        if(a[i] == el)
            s++;
    }
    if(s > n / 2)
        fout << el << " " << s << "\n";
    else
        fout << "-1\n";
}