include [HTML_REMOVED]
using namespace std;
int main(){
string s1,s2;
while(cin>>s1>>s2)
{
int t = 0;
for(int i = 0; i < s1.size(); i++)
{
if(s1[i] > s1[t])
t = i;
}
cout<<s1.substr(0,t+1)+s2+s1.substr(t+1)<<endl;
//substr(i,len) 从i开始字符串长len,第二个参数不写substr(p+1)默认到结尾
}
return 0;
}