#include<iostream>
#include<string.h>
using namespace std;
int main(){
int i,j,k=0;
string str="";
string str1="";
string str2="";
getline(cin,str);
getline(cin,str1);
int l1=str1.length();
int l=str.length();
for(i=0;i<l;i++){
str2[k++]=str[i];
}
for(i=0;i<l1;i++){
str2[k++]=str1[i];
}
for(i=0;i<k;i++){
cout<<str2[i];
}
return 0;
}
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