#include <cstdio>
#include <cstdlib>
#include <ctime>
#include <cstring>
#define Nmax 1000001

using namespace std;

int a[Nmax];
int n,k;

int partitioning(int left, int right)
{
	int pivot = a[left + (rand()%(right-left+1))];
	int i = left, j = right;
	while (1)
	{
		while (a[i] < pivot) ++i;
		while (a[j] > pivot) --j;
		if (i < j)
		{
			int aux = a[i];
			a[i] = a[j];
			a[j] = aux;
		}
		else return j;
		++i;
		--j;
	}
	return 0;
}

void majority(int st, int dr, int k)
{
	if (st == dr)
		return;

	int v = partitioning(st,dr);
	int dist = (v-st)+1;
	
	if (k <= dist)
		majority(st, v, k);
	else majority(v+1, dr, k-dist);
}

int main()
{
	srand(time(NULL));
	freopen("elmaj.in","r",stdin);
	freopen("elmaj.out","w",stdout);
	scanf("%d",&n);
	for (int i = 1; i <= n; ++i)
	{
		scanf("%d",&a[i]);
	}

	majority(1,n,n/2+1);
	int el = a[n/2+1];

	int nr = 0;
	for (int i = 1; i <= n; ++i)
		if (a[i] == el)
			++nr;
	if (nr == n/2 + 1)
		printf("%d %d\n", el, nr);
	else printf("-1\n");

	return 0;
}