#include <bits/stdc++.h>
using namespace std;

int main(){
	string s;
	string w,t;
	int p;
	cin>>s>>w>>t;
	
	p = s.find(w);
	while(p != -1){
		s.replace(p,1,t);
		p = s.find(w); 
	}
	
	cout<<s<<endl;
}
/**************************************************************
	Problem: 1570
	User: admin
	Language: C++
	Result: Accepted
	Time:18 ms
	Memory:2076 kb
****************************************************************/