#include <stdio.h>
#include <string.h>
int main()
{
char s1[101]={};
char s2[101]={};
int i,j;
scanf("%s",s1);
scanf("%s",s2);
if(strlen(s1)>strlen(s2))
{
printf("%s %s",s2,s1);
}
else if(strlen(s1)<strlen(s2))
{
printf("%s %s", s1,s2);
}
else
{
for(i=0;s1[i]!=NULL;i++)
{
if(s1[i]==s2[i])
{
continue;
}
else if(s1[i]>s2[i])
{
printf("%s %s",s2[i],s1[i]);
break;
}
else if(s2[i]>s1[i])
{
printf("%s %s",s1[i],s2[i]);
break;
}
}
}
return 0;
}