#include<cstdio>
int a[1000002], n;
using namespace std;

int main()
{
    ifstream f("elmaj.in", stdin);
    ofstream g("elmaj.out", stdout);
    f>>n;
    int maj = 0;
    int nr = 0;
    for(int i = 1; i <= n; i++)
    {
        f>>a[i];
        if(nr == 0)
        {
            maj = a[i];
            nr = 1;
        }
        else
            if(maj == a[i])
                k++;
            else
                k--;

    }
    if(k == 0)
        g << "-1";
    else
    {
        nr = 0;
        for(int i = 1; i <= n; i++)
            if(maj == a[i])
                nr++;
        if(nr >= (n+1)/2)
            g<< maj << " "<< nr;
        else g<<"-1";
    }
    return 0;
}