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#include <iostream>
#include <fstream>
using namespace std;
ifstream in("elmaj.in");
ofstream out("elmaj.out");
int n,cat, a[1000005],act;
int main()
{
in>>n;
for(int i=0; i<n; i++)
{
in>>a[i];
}
for(int i=0; i<n; ++i)
{
if(cat==0)
{
act=a[i];
cat++;
}
else
{
if(act!=a[i])
--cat;
else ++cat;
}
}
int cont=0;
for(int i=0;i<n;i++)
{
if(a[i]==act)
cont++;
}
if(cont >= (n/2)-1 )
out<<act<<" "<<cont;
else out<<-1;
return 0;
}