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#include <bits/stdc++.h>
using namespace std;
ifstream fin("elmaj.in");
ofstream fout("elmaj.out");
int n,i,v[1000005],nr,st;
int main()
{
fin>>n>>v[1];
st=v[1];
nr=1;
for(i=2; i<=n; i++)
{
fin>>v[i];
if(v[i]==st)
nr++;
else
{
nr--;
if(nr<0)
{
st=v[i];
nr=1;
}
}
}
if(nr>0)
{
nr=0;
for(i=1; i<=n; i++)
if(v[i]==st)
nr++;
}
else
{
fout<<-1;
return 0;
}
if(nr>=n/2+1)
fout<<st<<" "<<nr;
else
fout<<-1;
return 0;
}