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