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#include <fstream>
using namespace std;
ifstream fin("elmaj.in");
ofstream fout("elmaj.out");
int n,i,ac,nr,v[1000001];
int main()
{
fin>>n;ac=-1;
nr=0;
for(i=1;i<=n;i++)
{
fin>>v[i];
if(nr==0)
ac=v[i];
if(v[i]==ac)
nr++;
}
nr=0;
for(i=1;i<=n;i++)
if(v[i]==ac)
nr++;
if(ac>=n/2+1)
fout<<ac<<' '<<nr;
else fout<<-1;
return 0;
}