#include <iostream>
#include <string>
using namespace std;

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    string s;
    char c;
    cin >> s;
    cin >> c;
    for (int i = 0; i < s.length(); i++) {
        if (s[i] != c) {
            cout << s[i];
        }
    }
    cout << "\n";

    return 0;
}