#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: zhuanghaoxiang
	Language: C++
	Result: Accepted
	Time:17 ms
	Memory:2076 kb
****************************************************************/