6-13

//6-13
#include <stdio.h>
#include <stdlib.h>
#include"string.h"
int main()
{
//freopen("in.txt","r",stdin);
char s1[200],s2[100];
scanf("%s %s",s1,s2);
int len=strlen(s1);
int i;
for(i=0;s2[i];i++)
{
s1[i+len]=s2[i];
}
s1[i+len]=0;
printf("%s\n",s1);
printf("\n");
return 0;
}