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