#include<bits/stdc++.h>
using namespace std;
int main(){
	string s;
	getline(cin,s);
	string c1,c2;
	getline(cin,c1);
	getline(cin,c2);
	int p=s.find(c1);
	if(p==-1) cout<<s;
	else{
		while(p!=-1){
			s.replace(p,c1.size(),c2);
			p=s.find(c1,p+c2.size());
		}
		cout<<s;
	}
//	for(int i=0;i<s.size();i++){
//		if(s[i]==c1){
//			cout<<c2;
//		}else{
//			cout<<s[i];
//		}
//	}
	return 0;
}

/**************************************************************
	Problem: 1112
	User: zhangziang
	Language: C++
	Result: Accepted
	Time:22 ms
	Memory:2076 kb
****************************************************************/