#include <fstream>
using namespace std;
int v[1000001], n, i, nr, ct, c;
int main()
{
    ifstream f("elmaj.in");
    ofstream g("elmaj.out");
    f >> n;
    for(i = 1; i <= n; ++ i)
    {
        f >> v[i];
        if(nr == 0) nr = 1, c = v[i];
        else if(c == v[i]) nr ++;
        else nr --;
    }
    for(i = 1; i <= n; ++ i)
        if(v[i] == c) ct ++;
    if(ct >= nr / 2 + 1) g << c << " " << ct;
    else g << -1;
    f.close();
    g.close();
    return 0;
}