s = input()
ch = input()
print(*[c if c != ch else '' for c in s], sep='')

#include<bits/stdc++.h>
using namespace std;
int main()
{
    string a;
    getline(cin,a);
    char b;
    cin>>b;
    for(int i=0;i<a.size();i++)
    {
        if(a[i]==b)
            cout<<"";
        else
            cout<<a[i];
    }
    return 0; 
}