#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: hulaoshi
	Language: C++
	Result: Accepted
	Time:14 ms
	Memory:2076 kb
****************************************************************/