#include <bits/stdc++.h>
using namespace std;
 int main(){
	string s;
	char n;
    cin>>s>>n;
//    int p;
//    p=s.find(z);
//    x=s.substr(p+1);
//    y=s.substr(0,s.size()-x.size()-1);
//    cout<<x<<","<<y;
	int p=s.find(n);
	while(p!=-1){
		s.erase(p,1);
		p=s.find(n);
	}
	cout<<s;
    return 0;
}
/**************************************************************
	Problem: 1131
	User: xuanhua
	Language: C++
	Result: Accepted
	Time:9 ms
	Memory:2076 kb
****************************************************************/