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#include <fstream>
using namespace std;
ifstream f("elmaj.in");
ofstream g("elmaj.out");
int main()
{
unsigned int n,v[1000000];
int k=0,elem=0;
f>>n;
for(int i=0;i<n;i++)
f>>v[i];
for(int i=0;i<n;i++)
{
if(k==0)
elem=v[i];
else if(v[i]==elem)
k++;
else k--;
}
k=0;
for(int i=0;i<n;i++)
if(v[i]==elem)
k++;
if(k>n/2)
g<<elem<<" "<<k;
else
g<<"-1";
f.close();
g.close();
}