#include <iostream>
#include <fstream>

using namespace std;

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

const int NMAX = 1000000 + 1;

int n;
int v[NMAX];

void rezolva() {
    int cand = -1, k = 0;
    for (int i = 1; i <= n; i++) {
        f >> v[i];
        if (k == 0) cand = v[i], k++;
        else if (v[i] == cand) k++;
        else k--;
    }
    int aparitii = 0;
    for (int i = 1; i <= n; i++) {
        if (v[i] == cand) aparitii++;
    }
    if (aparitii >= (n + 1) / 2) g << cand << ' ' << aparitii;
    else g << -1;
    g << '\n';
}

int main() {
    f >> n;
    rezolva();
    return 0;
}