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#include <fstream>
using namespace std;
int n,x,i,nr,nrez;
long v[1000005];
int main()
{
ifstream cin("elmaj.in");
ofstream cout("elmaj.out");
cin>>n;
for(int i=1;i<=n;i++)
{
cin>>v[i];
if(nr==0)
{
x=v[i];
}
if(v[i]==x)
{
nr++;
}
else nr--;
}
for(i=1;i<=n;i++)
{
nrez+=(v[i]==x);
}
if(nrez*2+1>=n)
cout<<x<<" "<<nrez;
else cout<<-1;
return 0;
}