#include <fstream>
#include <algorithm>
#define N 1000010

std::ifstream in ("elmaj.in");
std::ofstream out ("elmaj.out");
int a[N],i,k,nk,n;

int main () {
	in>>n;
	for (i=0; i<n; i++) in>>a[i];
	std::nth_element (a,a+n/2,a+n);
	k=a[n/2];
	for (i=0; i<n; i++) if (a[i]==k) nk++;
	if (nk>=n/2) out<<k<<" "<<nk<<"\n";
	else out<<"-1\n";
	return 0;
}