#include<bits/stdc++.h>
using namespace std;
const int N=1e5+10;
const int INF=0x3f3f3f3f;
int main(){
	string s,a,b;
	getline (cin,s);
	cin>>a>>b;
	s=" "+s+" ";
	a=" "+a+" ";
	b=" "+b+" ";
	while(s.find(a)!=string::npos){
		s.replace(s.find(a),a.size(),b);
	}
	for(int i=1;i<s.size()-1;i++){
		cout<<s[i];
	}
}