#include<iostream>
#include<algorithm>
using namespace std;
int main(){	 //C++17级 单词替换
	string s,s1,s2;
	getline(cin,s);
	cin>>s1>>s2;
	int pos=s.find(s1);
	s.replace(pos,s1.length(),s2);
	cout<<s; 
	return 0;
}

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