#include <fstream>
#define IN "elmaj.in"
#define OUT "elmaj.out"
#define NMAX 1000001
using namespace std;

ifstream fin(IN);
ofstream fout(OUT);

int n,a[NMAX];
int main()
{
    int i,x,cate=0;
    fin>>n;
    fin>>a[1];
    x=a[1];
    cate=1;
    for(i=2; i<=n; i++)
    {
        fin>>a[i];
        if(x==a[i])
            cate++;
        else
        {
            cate--;
            if(cate==0)
            {
                cate=1;
                x=a[i];
            }
        }
    }
    cate=0;
    for(i=1; i<=n; i++)
        if(a[i]==x) cate++;
    if(cate>=n/2)
    {
        fout<<x<<' '<<cate<<'\n';
    }
    else fout<<-1<<'\n';
    return 0;
}