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