#include <fstream>
using namespace std;

ifstream cin("elmaj.in");
ofstream cout("elmaj.out");

const int dim= 1e6+ 5;
int v[dim];

int main()
{
    int n, i, j;
    cin >> n;

    int elm= 0, cnt= 0;
    for(i= 1;i <= n;i++){
        cin >> v[i];
        if(elm== 0){
            elm= v[i];
            cnt= 1;
        }
        else
        if(elm== v[i]){
            cnt++;
        }
        else{
            cnt--;
        }
    }

    int cate= 0;
    for(i= 1;i <= n;i++){
        if(elm== v[i])
            cate++;
    }

    if(cate >= n/ 2+ 1)cout << elm <<" "<< cate;
    else cout << "-1";



    return 0;
}