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#include <fstream>
#include <algorithm>
using namespace std;
ifstream f("elmaj.in");
ofstream g("elmaj.out");
int n,i,c,nr,nr1,a[1000012];
int main()
{
f>>n;
for(i=1;i<=n;++i)
f>>a[i];
sort(a+1,a+n+1);
nr=0; c=a[1];
for(i=2;i<=n;++i)
{
if(c==a[i])
nr++;
else nr--;
if(nr<0)
{
c=a[i];
nr=0;
}
}
for(i=1;i<=n;++i)
{
if(c==a[i])
nr1++;
}
if(nr1>=(n/2))
g<<c<<" "<<nr1;
else g<<-1;
return 0;
}