#include <fstream>
using namespace std;

ifstream cin("elmaj.in");
ofstream cout("elmaj.out");
unsigned long long n, a[1000001],b[1000001],  majoritar, sol, i;



void quickSort(unsigned long long arr[],unsigned long long left, unsigned long long right)
{
long long i = left, j = right;
long long tmp;
long long pivot = arr[(left + right) / 2];
 /* partition */
while (i <= j)
{
while (arr[i] < pivot)
i++;
while (arr[j] > pivot)
j--;
if (i <= j)
{
tmp = arr[i];
arr[i] = arr[j];
arr[j] = tmp;
i++;
j--;
}
}
if (left < j)
quickSort(arr, left, j);
if (i < right)
quickSort(arr, i, right);
}
int main()
{
    cin>>n;
    for(i=1;i<=n;i++)
        {cin>>a[i];
        b[a[i]]++;}
    quickSort(a, 1, n);
    if(   (n-1)/2<=b[a[(n-1)/2]]    )
    cout<<a[(n-1)/2]<<" "<<b[a[(n-1)/2]];
    else cout<<"-1";
    return 0;
}