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#include <fstream>
using namespace std;
ifstream fin("elmaj.in");
ofstream fout("elmaj.out");
int n,a[1000100],k,u;
int main(){
fin>>n;
for(int i=1;i<=n;i++){
fin>>a[i];
if(k==0){
u=a[i];
k++;
}
else{
if(a[i]==u){
k++;
}
else{
k--;
}
}
}
k=0;
for(int i=1;i<=n;i++){
if(a[i]==u){
k++;
}
}
if(k>=(n/2+1)){
fout<<u<<" "<<k;
}
else{
fout<<"-1";
}
}