#include <fstream>
#include <algorithm>

using namespace std;

ifstream in("elmaj.in");
ofstream out("elmaj.out");

const int MAX=1000100;

int v[MAX],n;

int main(){
	in>>n;
	int i;
	for(i=1;i<=n;++i){
		in>>v[i];
	}
	nth_element(v+1,v+n/2,v+n+1);
	int maj=n/2;
	int ap=0;
	for(i=1;i<=n;++i){
		if(maj==v[i]){
			ap++;
		}
	}
	if(2*ap>=n){
		out<<maj<<" "<<ap;
		return 0;
	}
	out<<"-1";
	return 0;
}