//方法1
#include <bits/stdc++.h>
using namespace std;
int main(){
    string s1,s2;
    cin>>s1>>s2;
    int b=s1.length();
    int a=b/2;
    for(int i=0;i<a;i++)
		cout<<s1[i];
    cout<<s2;
    for(int i=a;i<b;i++) 
		cout<<s1[i];
    cout<<endl;
    return 0;
}