1016 部分A+B (15 分)

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.math.BigInteger;
import java.nio.Buffer;
import java.util.*;    
public class Main{    

    public static void main(String[] args) throws IOException {
    
        //Scanner scanner = new Scanner(System.in);
        BufferedReader  bf=new BufferedReader(new InputStreamReader(System.in));
        
        String []str=bf.readLine().split(" ");
//        int a=Integer.parseInt(str[1]);
//        int b=Integer.parseInt(str[3]);
        if(str[0].contains(str[1])==false||str[2].contains(str[3])==false){
            System.out.println(0);
            return;
        }

        StringBuilder ra= new StringBuilder("");
        StringBuilder rb= new StringBuilder("");
        for(int i=0;i<str[0].length();i++){
            if(str[1].equals(str[0].charAt(i)+"")){
                ra.append(str[1]);
            }
        }
        for(int i=0;i<str[2].length();i++){
            if(str[3].equals(str[2].charAt(i)+"")){
                rb.append(str[3]);
        }
    }
//        if(ra.length()==0||rb.length()==0){
//            System.out.println(0);
//            return;
//        }


    
    BigInteger a1 = new BigInteger(ra.toString());
    BigInteger b1 = new BigInteger(rb.toString());
    System.out.println(a1.add(b1));

}
}