#include<bits/stdc++.h>
using namespace std;
int main()
{
	string s1,s2,s3;
	getline(cin,s1);
	cin>>s2>>s3;
	int pos=s1.find(s2);
	s1.replace(pos,s2.size(),s3);
	cout<<s1;
	return 0;
}