题解

#include<bits/stdc++.h>
using namespace std;
string s1,s2;
int main()
{
	cin>>s1>>s2;
	if(s1.size()<s2.size())
		cout<<s1<<endl<<s2;
	else if(s1.size()>s2.size())
		cout<<s2<<endl<<s1;
	else if(s1<s2)
		cout<<s1<<endl<<s2;
	else if(s1>s2)
		cout<<s2<<endl<<s1;
	return 0;
}