#include #include using namespace std;

int main() { string s, find, replace; getline(cin, s); getline(cin, find); getline(cin, replace);

string result;
int n = s.length();
int m = find.length();
int i = 0;
while (i < n) {
    bool match = true;
    if (i + m <= n) {
        for (int j = 0; j < m; j++) {
            if (s[i + j] != find[j]) {
                match = false;
                break;
            }
        }
    } else {
        match = false;
    }
    if (match) {
        result += replace;
        i += m;
    } else {
        result += s[i];
        i++;
    }
}
cout << result << endl;
return 0;

}