#include <stdio.h>
#include <string.h>

void MergeString(char s[],char s1[],char s2[])
{
	int i = 0;
	char *p,*q;
	p = s1;
	q = s2;
	while(*q != '\0') q++;
	q--;
	while(*p != '\0' || *q != '\0')
		if(i % 2 == 0) s[i++] = *p++;
		else s[i++] = *q--;
	s[i] = '\0';
}

int main()
{
	char s1[101],s2[101];
	while(gets(s1) != NULL)
	{
		gets(s2);
		char s[202];
		MergeString(s,s1,s2);
		puts(s);
	}
	return 0;
}