import java.util.*;

public class Main {

    static Scanner sc = new Scanner(System.in);

    public static void main(String[] args) {
        char[] chars = sc.next().toCharArray();
        long K = sc.nextLong();

        for (int i = 0; i < Math.min(chars.length, K); i++) {
            if (chars[i] != '1') {
                System.out.println(chars[i]);
                return;
            }
        }
        System.out.println('1');
    }
}

/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