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#include <bits/stdc++.h>
using namespace std;
ifstream fin("elmaj.in");
ofstream fout("elmaj.out");
int main()
{
int n,elmaj,nr_elem=0;
fin>>n;
vector<long long unsigned> elements(n);
for(int i=0;i<n;i++)
{
fin>>elements[i];
if(nr_elem==0)
{
elmaj=elements[i];
nr_elem=1;
}
else if(elmaj==elements[i])
{
nr_elem++;
}
else
{
nr_elem--;
}
}
if(nr_elem>0)
{
nr_elem=0;
for(int i=0;i<n;i++)
{
if(elements[i]==elmaj)
nr_elem++;
}
if(nr_elem>=n/2+1)
fout<<elmaj<<' '<<nr_elem<<'\n';
else
fout<<-1<<'\n';
}
else
fout<<-1<<'\n';
return 0;
}