#include <fstream>
using namespace std;
int n,i,nr,c,v[1000005];
ifstream fin("elmaj.in");
ofstream fout("elmaj.out");
int main()
{
    fin>>n;
    for(i=1;i<=n;i++)
    {
        fin>>v[i];
        if(nr==0)c=v[i];
        if(v[i]==c)nr++;
        else nr--;
    }
    if(!nr)fout<<-1;
    else {
        nr=0;
        for(i=1;i<=n;i++)if(v[i]==c)nr++;
        if(nr>=n/2+1)fout<<c<<' '<<nr;
        else fout<<-1;
    }
    return 0;
}