#include <cstdio>
#include<algorithm>
using namespace std;
int a[1000005];
int main () {
	int i,n,c=1;
	freopen("elmaj.in","r",stdin);
	freopen("elmaj.out","w",stdout);
	scanf("%d",&n);
	for(i=1;i<=n;++i)scanf("%d",&a[i]);
	sort(a+1,a+n+1);
	for(i=1;i<n;++i){
		if(a[i]==a[i+1]){
			c=c+1;
		}else{
			if(c>=n/2){
				printf("%d %d",a[i],c);
				return 0;
			}
			c=1;
		}
	}
	printf("-1");	
	return 0;
}