#include <cstdio>
#include <algorithm>
using namespace std;
FILE*fin=fopen("elmaj.in","r");
FILE*fout=fopen("elmaj.out","w");
unsigned int i,j,k,a,b,v[1100005],rasp,raspe,nr,nre,n;
int main()
{
    fscanf(fin,"%d",&n);
    for (i=0;i<n;i++)
    fscanf(fin,"%d",&v[i]);
     nth_element(v,v+n/2,v+n);
    raspe=v[n/2];
for (i=0;i<n;i++)
if (v[i]==raspe)
++nre;
if (nre>n/2)
{
    fprintf(fout,"%d %d\n",raspe,nre);
}
else fprintf(fout,"-1\n");
    return 0;
}