#include <fstream>
#include <vector>
#include <algorithm>
using namespace std;

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

int main()
{
    ios_base::sync_with_stdio(0);
    in.tie(0);
    out.tie(0);

    int n;
    in >> n;

    vector<int> v(n+1);
    for(int i = 0; i < n; i++) in >> v[i];

    sort(v.begin(),v.end());

    int el = v[n/2-1];
    int fr = 0;

    for(int i = 0; i < n; i++)
        if(v[i] == el) fr++;

    if(fr >= n/2 + 1) out << el << ' ' << fr;
    else out << -1;

    return 0;
}