#include<bits/stdc++.h>
using namespace std;
int main(){
string s,s1,s2;
getline(cin,s);
s=" "+s+" ";
getline(cin,s1);
getline(cin,s2);
s1=" "+s1+" ";
s2=" "+s2+" ";
for(int k=0;(k=s.find(s1,k))>=0; k+=s2.size()-1)s.replace(k,s1.size() ,s2）；
cout<<s.substr(1,s.size()-2);
return 0;
}