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

int main()
{
    int i,j=0,k=0,m=0;
    char ara1[104],ara2[104],ara3[500];
    scanf("%s%s",ara1,ara2);
    int len1=strlen(ara1),len2=strlen(ara2);
    for(i=0;i<len1;i++)
    {
        ara3[m]=ara1[j];j++;m++;
        ara3[m]=ara2[k];k++;m++;


    }
    ara3[m]='\0';
    printf("%s\n",ara3);



    return 0;
}
