#include<stdio.h>
#include<string.h>
int main()
{
char s1[101],s2[101];
while(scanf("%s%s",s1,s2)!=EOF){
int L=strlen(s2)-1;
for(int i=0,j=L;s1[i]!=0;i++,j--){
printf("%c%c",s1[i],s2[j]);
}
printf("\n");
}
return 0;
}
#include<string.h>
int main()
{
char s1[101],s2[101];
while(scanf("%s%s",s1,s2)!=EOF){
int L=strlen(s2)-1;
for(int i=0,j=L;s1[i]!=0;i++,j--){
printf("%c%c",s1[i],s2[j]);
}
printf("\n");
}
return 0;
}