# include <fstream>
# include <algorithm>
using namespace std;
ifstream f("elmaj.in");
ofstream g("elmaj.out");
int a[1000005];
int main ()
{
    int i,n,VV,x;
    f>>n;
    for (i=1; i<=n; ++i)
        f>>a[i];
    nth_element(a+1,a+n/2,a+n+1);
    VV=0; x=a[n/2];
    for (i=1; i<=n; ++i)
    {
        if (a[i]==x) ++VV;
    }
    if (VV>=n/2+1) g<<x<<" "<<VV<<"\n";
        else g<<"-1\n";

    return 0;
}