
int main()
{
	char str[256];
	char sub[256];
	char rep[256];
	cin >> str >> sub >> rep;
	int len = strlen(sub);
	int i = 0;
	char *p, *q, *r;
	p = strstr(str, sub);
	q = rep;
	if (p != NULL)
	{
	for (r = p; r < p + len; r++)
		*r = *q++;
	}
	cout << str << endl;
	return 0;
}
	