#include<bits/stdc++.h>
using namespace std;
 int main(){
    string s;
    char n;
    cin>>s>>n;
    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:8 ms
	Memory:2076 kb
****************************************************************/