#include <string>
#include <algorithm>
#include <iostream>
#include <vector>
#include <stdio.h>
#define pb push_back

using namespace std;

vector<int> v,viz;

int N,nr,act,num,ret;
string str;
int main(){
    freopen("elmaj.in","r",stdin);
    freopen("elmaj.out","w",stdout);
    nr=0;
    cin>>N;
    for(int i=0;i<N;++i)
    {
        cin>>nr;
        v.pb(nr);
    }
    nth_element(v.begin(),v.begin() + (N/2),v.end());
    act = v[N/2];
    nr = 0;
    for(int i=0;i<N;++i)
    {
        if(v[i] == act)
            ++nr;
    }
    if(nr >= (N/2) +1)
        printf("%d %d\n",act,nr);
    else printf("-1");
    return 0;
}