#include <bits/stdc++.h>

using namespace std;
ifstream in("elmaj.in");
ofstream out("elmaj.out");
const int NMax = 1e6 + 5;

int N;
int v[NMax];

int main() {
    in>>N;
    for (int i=1;i <= N;++i) {
        in>>v[i];
    }

    sort(v+1,v+N+1);

    int val = v[N/2], nr = 0;
    for (int i=1;i <= N;++i) {
        if (v[i] == val) {
            ++nr;
        }
    }

    if (nr > N/2) {
        out<<val<<' '<<nr<<'\n';
    }
    else {
        out<<"-1\n";
    }

    in.close();out.close();
    return 0;
}