task

import java.util.*;
import java.util.stream.Collectors;

public class delenieBezOstatuk {
    public static void main(String[]args){
        Scanner scanner = new Scanner(System.in);
        List<Integer> sequenceOfNumbers = new ArrayList<>();
        String[] array = scanner.nextLine().split((" "));
        String otherArray = scanner.nextLine();
        String[] message = new String[otherArray.length()];

        for (int i = 0; i < array.length; i++) {
            sequenceOfNumbers.add(Integer.parseInt(array[i]));
        }
        List<String> word = new ArrayList<>();
        int sum4e = 0;
        for (int i = 0; i < sequenceOfNumbers.size(); i++) {
            int num = sequenceOfNumbers.get(i);
            while (!(num==0)){
                sum4e += num%10;
                num /= 10;
            }
            sequenceOfNumbers.remove(sequenceOfNumbers.get(i));
            i=0;

            if (sum4e>message.length){
                for (int j = 0; j < message.length; j++) {
                    if (message.length+j==sum4e){
                        word.add(String.valueOf(message[message.length+j]));
                    }
                }
            }
            else{
                for (int j = 0; j < message.length; j++) {
                    if (j==sum4e){
                        word.add(String.valueOf(message[j]));
                    }
                }
            }
        }
        String output = String.join("",word);
        System.out.println(output);
    }
}