good

#include<bits/stdc++.h>
using namespace std;

int main(){
string s1,s2;
cin>>s1>>s2;
if(s1==s2)
{
cout<<s1;
}
else if(s1<s2)
{
cout<<s1<<' '<<s2;
}
else
{
cout<<s2<<' '<<s1;
}

return 0;

}