....................

#include <iostream>
using namespace std;
int main(){
string a,b;
cin>>a>>b;
int q=a.size();
int p=b.size();
if(q>p){
cout<<b<<endl<<a;
}else if(p>q){
cout<<a<<endl<<b;
}else if(a>b){
cout<<b<<endl<<a;
}else{
cout<<a<<endl<<b;
}
return 0;
}