#include<bits/stdc++.h>

#define all(s) s.begin(),s.end()
#define rc(x) return cout<<x<<endl,0
#define forn(i,n) for(int i=0;i<int(n);i++)

#define pb push_back
#define mp make_pair
#define fr first
#define sc second

typedef long long ll;
typedef long double ld;

const int nmax=2e5+3;
const int mod=2011;
const ll inf=0x3f3f3f3f3f3f3f3f;

using namespace std;

int main()
{
  ios_base::sync_with_stdio(0); cin.tie(0);
  freopen("elmaj.in","r",stdin);
  freopen("elmaj.out","w",stdout);
  int n;
  cin>>n;
  map<int,int>m;
  int k=0;
  forn(i,n)
  {
    int x;
    cin>>x;
    m[x]++;
    if(m[x]==1) k++;
    if(k>n/2) rc(-1);
  }
  for(auto it:m)
  {
    if(it.sc>n/2) {cout<<it.fr<<" "<<it.sc; return 0;}
  }
  cout<<"-1\n";
}