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