团体程序设计天梯赛-练习集 L1-011 A-B (20 分)

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;


public class Main
{
	public static void main(String[] args) throws IOException
	{
     BufferedReader in=new BufferedReader(new InputStreamReader(System.in));
     String s=in.readLine();
     String s2=in.readLine();
     System.out.println(s.replaceAll("["+s2+"]",""));
	}
}