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#include <fstream>
#include <algorithm>
using namespace std;
ifstream fin("elmaj.in");
ofstream fout("elmaj.out");
int n,i,vmax,imax,a[1001000],nr,stiva_v,stiva_nr,x;
int main()
{
fin >> n;
for(i = 1; i <= n; i ++)
fin >> a[i];
nth_element(a + 1, a + n / 2, a + n + 1);
x = a[n / 2];
for(i = 1; i <= n; i ++)
if(a[i] == x)
nr ++;
if(nr >= n / 2 + 1)
fout << x << " " << nr;
else
fout << -1;
return 0;
}