解题

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

int main() {
string x,y;
cin >> x >> y;
if(x.size()<y.size()){
cout<< x <<endl << y;
}else if(x.size()>y.size()){
cout << y << endl << x;
}else if(x<y){
cout << x << endl << y;
}else{
cout << y << endl << x;
}

return 0;

}