#include <fstream>

using namespace std;

int main()
{
    ifstream fin("elmaj.in");
    ofstream fout("elmaj.out");

    int n, cand, k, x;

    fin >> n;
    fin >> cand; k = 1;
    for (int i = 1; i < n; ++i)
    {
        fin >> x;
        if (x == cand) ++k;
        else if (k == 0)
        {
            cand = x;
            ++k;
        }
            else --k;
    }
    fin.close();
    ifstream fin2("elmaj.in");
    fin2 >> n; k = 0;
    for (int i = 1; i <= n; ++i)
    {
        fin2 >> x;
        if (x == cand) ++k;
    }
    if (k > n/2) fout << cand << ' ' << k << '\n';
    else fout << "-1" << '\n';
    return 0;
}