题解

#include <bits/stdc++.h>
using namespace std;
string s1,s2;
int main()
{
	cin>>s1>>s2;
	int len1=s1.size();
	int len2=s2.size();
	if(len1>len2) cout<<s2<<endl<<s1;
	else cout<<min(s1,s2)<<endl<<max(s1,s2);
	 	 
	return 0;
}