#include <iostream>
#include <fstream>
#include <unordered_map>

std::ifstream fin("elmaj.in");
std::ofstream fout("elmaj.out");

int n;
std::unordered_map<int, int> aparitii;

void citire()
{
    fin>>n;
    int x;
    int nr = 0;
    long long maxim = -1, indice;
    for(int i = 0; i < n; i++)
    {
        fin>>x;
        aparitii[x]++;
        if(aparitii[x] > maxim)
        {
            maxim = aparitii[x];
            indice = x;
            nr = 0;
        }
        else
            if(aparitii[x] == maxim)
            {
                nr++;
            }
    }
    if(nr == 0)
    {
        fout<<x<<' '<<maxim<<'\n';
    }
    else
    {
        fout<<-1<<'\n';
    }
}

void rezolvare()
{

}

int main()
{
    citire();
    rezolvare();
    return 0;
}