#include <iostream>
#include <cstring>
#include <cstdio>
using namespace std;
//连接字符数组
int string_connect(char line_1[1001],char line_2[1001]) {
char c[1001] = {};
int len_1=strlen(line_1);
int len_2=strlen(line_2);
int lens=(len_1+len_2);
for(int i=0; i<lens; i++) {
if(i<=len_1)
c[i]=line_1[i];
else
c[i]=line_2[i];
return c[i];
}
}
int main() {
char poster1[1001],poster2[1001];
gets(poster1);
gets(poster2);
for(int i=0,j=0;i<strlen(poster1),j<strlen(poster2);i++,j++){
string_connect(poster1[i],poster2[j]);
}
return 0;
}