#include <bits/stdc++.h>
using namespace std;
int main()
{
string s1,s2;
while(cin>>s1>>s2)
{
int b=0;
for(int i=0;i<s1.size();i++)
{
if(s1[i]>s1[b]) b=i;
}
s1.insert(b+1,s2);
cout<<s1<<endl;
}
return 0;
}