题解

#include<iostream>
using namespace std;
int main(){
    string a,b;
    int i=0;
    cin>>a>>b;
    if(a.size()>b.size()){
        cout<<b<<endl;
        cout<<a;
    }
    else if(b.size()>a.size()){
        cout<<a<<endl;
        cout<<b;
    }
    else{
        while(true){
            if(a[i]>b[i]){
                cout<<b<<endl;
                cout<<a;
                break;
            }
            if(b[i]>a[i]){
                cout<<a<<endl;
                cout<<b;
                break;
            }
            i++;
        }
    }
    return 0;
}

a