#include <iostream>
#include <fstream>
#include <vector>

using namespace std;

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

vector<int> vi;

int main()
{
    int n, a;
    int k = 0, kapa;
    fin >> n;
    vi.reserve(n+41);
    for(int i = 0; i < n; i++){
        fin >> a;
        vi.push_back(a);
        if(k == 0){
            k = 1;
            kapa = a;
        }else if(a == kapa){
            k++;
        }else{
            k--;
        }
    }
    
    int ipak = 0;
    for(int i = 0; i < n; i++){
        if(vi[i] == kapa){
            ipak++;
        }
    }
    
    if(ipak >= 2/n+1){
        fout << kapa << " " << ipak;
    }else{
        fout << -1;
    }
    return 0;
}