#include<iostream>
using namespace std;
int main(){
	string a,b,str,s;
	getline(cin,str);
	str+=" ";
	cin>>a>>b;
	for(int i=0;i<str.size();i++){
		if(str[i]!=' '){
			s+=str[i];continue;
		}
		if(s==a) cout<<b;
		else cout<<s;
		cout<<" ";
		s="";
	}
	return 0;
}