#include<fstream>
#include<algorithm>
#include<vector>
#include<string>
#include<cmath>
using namespace std;

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


int v[1000002];
int main()
{
    int n,cand=-1,cnt=0;
    cin>>n;
    for(int i=1;i<=n;i++){
            cin>>v[i];
    }
    sort(v+1,v+1+n);
    cand=v[n/2];
    for(int i=1;i<=n;i++){
        if(v[i]==cand)cnt++;
    }
    if(cnt>n/2)cout<<cand<<" "<<cnt;
    else cout<<"-1";
    return 0;
}