#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: hulaoshi
	Language: C++
	Result: Runtime Error
****************************************************************/