#include<bits/stdc++.h>
using namespace std;
int main(){
    string s1,s2,s3,s4;
    getline(cin,s1);
    getline(cin,s2);
    getline(cin,s3);
     
    int p=s1.find(s2),c=s2.size(),c1=s3.size();
    while(p!=-1){
        s1.replace(p,c,s3);
        p=s1.find(s2,p+c1);
    }
 
   cout<<s1;
 
    return 0;
}
/**************************************************************
	Problem: 1112
	User: xuanhua
	Language: C++
	Result: Accepted
	Time:17 ms
	Memory:2076 kb
****************************************************************/