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#include <fstream>
using namespace std;
ifstream fin("elmaj.in");
ifstream fin2("elmaj.in");
ofstream fout("elmaj.out");
int main()
{
int n, a, p=0, current=0;
fin>>n;
for(int i=1; i<=n; i++)
{
fin>>a;
if(p==0)current=a;
if(a==current)++p;
else --p;
}
a=p=0;
fin2>>a;///waste
for(int i=1; i<=n; i++)
{
fin2>>a;
if(a==current)++p;
}
if(p>=n/2)fout<<a<<' '<<p;
else fout<<-1;
return 0;
}