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#include<iostream>
#include<fstream>
#include<algorithm>
using namespace std;
fstream fin("elmaj.in",ios::in),
fout("elmaj.out",ios::out);
int v[1000000];
int main()
{
int n,j,apare=1,p,nr=0,i,ma;
fin>>n;
for(i=2;i<=n;i++)
{
fin>>v[i];
}
ma=v[1];
for(i=1;i<=n;i++)
{
if(ma==v[i+1])
{
apare++;
}
else
{
if(apare>0)
{
apare--;
}
else
{
if(apare<1)
{
ma=v[i+1];
apare=1;
}
}
}
}
apare=0;
for(i=1;i<=n;i++)
{
if(ma==v[i])
{
apare++;
}
}
if(apare>=n/2+1)
{
fout<<ma<<" "<<apare;
}
else
{
fout<<"-1";
}
fin.close();
fout.close();
}