#include <iostream>
#include <fstream>
using namespace std;
ifstream in ("elmaj.in");
ofstream out("elmaj.out");
unsigned const N=1<<5;
int n,v[20];
int main()
{
    in>>n;  int el,ram=0;
    for(int i=1;i<=n;i++)
    {
        in>>v[i];
        if(ram==0)
        {
            el=v[i];
            ram++;
        }
        else if(el==v[i])
            ram++;
        else
            ram--;

    }   ram=0;
    for(int i=1;i<=n;i++)
        if(el==v[i])
            ram++;
    if(ram>n/2) out<<el<<" "<<ram<<"\n";
    else        out<<"-1\n";
    return 0;
    /*int n,x,elmaj=0,nrapmax=0;
    in>>n;
    for(int i=n;i>0;i--)
    {
        in>>x;
        v[x]++;
        if(v[x]>nrapmax)
        {nrapmax=v[x];elmaj=x;}
    }
    n=n/2+1;
    if(nrapmax<n){out<<"-1\n";return 0;}
    out<<elmaj<<" "<<nrapmax<<"\n";*/
    return 0;
}