#include<fstream>
using namespace std;

ifstream cin ("elmaj.in");
ofstream cout ("elmaj.out");
int v[1000005];
int main()
{
    int n,i,k=0,cand=-1;
    cin>>n;
    for(i=1;i<=n;i++)
    {
        cin>>v[i];
        if(k==0)
        {
            cand=v[i];
            k=1;
        }
        else
        if(v[i]==cand)
            k++;
        else k--;
    }
    if(cand==-1)
        cout<<cand;
    else
    {
        int sol=0;
        for(i=1;i<=n;i++)
        {
            if(v[i]==cand)
            sol++;
        }
        if(sol>n/2)
            cout<<cand<<" "<<sol;
        else
            cout<<"-1\n";
    }

    return 0;
}