#include <fstream>
#include <algorithm>
using namespace std;
ifstream fin("elmaj.in");
ofstream fout("elmaj.out");
int n,v[1000001];
int main(){
    fin>>n;
    for(int i=1;i<=n;i++)
        fin>>v[i];
    sort(v+1,v+n+1);
    int rez=0;
    int i=1;
    while(i<=n){
        int ap=1;
        while(v[i]==v[i+1])
            ap++,i++;
        if(ap>=n/2+1)
        {fout<<v[i]<<" "<<ap; rez=1; break;}
        else
            i++;
    }
    if(rez==0)
        fout<<-1;
    return 0;
}