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#include <fstream>
using namespace std;
ifstream f ("elmaj.in");
ofstream g ("elmaj.out");
int n,v[1000005],act,fr;
int main()
{
f>>n;
for(int i=1;i<=n;++i)
{
f>>v[i];
}
act=v[1];
fr=1;
for(int i=2;i<=n;++i)
{
if(v[i]==act)
{
++fr;
continue;
}
else
{
--fr;
if(fr<0)
{
act=v[i];
fr=1;
}
}
}
fr=0;
for(int i=1;i<=n;++i)
{
if(act==v[i]) ++fr;
}
if(fr>=n/2+1)
{
g<<act<<' '<<fr;
}
else g<<-1;
return 0;
}