#include<bits/stdc++.h>
using namespace std;
int main(){
    string s1;
    cin>>s1;
    char c;
    cin>>c;
//    for(int i=0;i<s1.size();i++){
//      if(s1[i]!=c){
//          cout<<s1[i];
//      }
//    }
  int p=s1.find(c);
  if(p==-1){
     cout<<s1;
  }else{
     while(p!=-1){
        s1.erase(p,1);
        p=s1.find(c,p);
     }  
     cout<<s1;
  }
  
    return 0;
}
/**************************************************************
	Problem: 1131
	User: wenda
	Language: C++
	Result: Accepted
	Time:16 ms
	Memory:2076 kb
****************************************************************/