#include <iostream>
#include <fstream>
using namespace std;

int main()
{
    ifstream fin("elmaj.in");
    ofstream fout("elmaj.out");
    long n,v[1000001],x,i,k;
    fin>>n;
    for(i=1;i<=n;i++)
        fin>>v[i];
    x=v[1];k=1;
    for(i=2;i<=n;i++)
        if(x==v[i])k++;
        else if(k>0)k--;
        else
        {
            x=v[i];
            k=1;
        }
    k=0;
    for(i=1;i<=n;i++)
        if(x==v[i])k++;
    if(k>n/2)fout<<x<<" "<<k;
    else fout<<"-1";
    fin.close();
    fout.close();
    return 0;
}