#include <bits/stdc++.h>

using namespace std;
ifstream in("elmaj.in");
ofstream out("elmaj.out");
int n,m,ap,v[1000005];
int main()
{
    in>>n;
    for(int i=1;i<=n;i++)
    {
        in>>v[i];
        if(ap==0)
        {
            m=v[i];
            ap=1;
        }
        else
        {
            if(v[i]==m) ap++;
            else ap--;
        }
    }
    ap=0;

    for(int i=1;i<=n;i++)
        if(v[i]==m) ap++;

    if(ap>=n/2+1) out<<m<<" "<<ap;
    else out<<-1;
    return 0;
}