import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s = sc.next();
        long k = sc.nextLong();
        String ans = "1";
        long count = 0l;
        for (int i = 0; i < s.length() ; i++) {
            String ss = s.substring(i, i + 1);
            if(s.substring(i, i +1).equals("1")) {
                count++;
            }
            else if(!ss.equals("1")) {
                ans = ss;
                break;
            }
        }
        if(count >= k) System.out.println("1");
        else System.out.println(ans);
    }
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz