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#include <fstream>
#include <algorithm>
using namespace std;
ifstream f("elmaj.in"); ofstream g("elmaj.out");
int n, v[1000005];
int main()
{
f>>n;
for(int i=1; i<=n; i++) f>>v[i];
sort(v+1, v+n+1);
int i=1, j;
bool w=false;
while(i<=n and !w)
{
j=i+1;
while(v[i]==v[j]) j++;
if(j-i>n/2) w=true;
else i=j;
}
if(w) g<<v[i]<<' '<<j-i;
else g<<-1;
g.close();
return 0;
}