import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        char[] s = sc.next().toCharArray();
        long k = sc.nextLong();

        for (char c : s) {
            int num = Character.getNumericValue(c);

            if (num == 1 && --k == 0) {
                System.out.println(1);
                return;
            }

            if (num != 1) {
                System.out.println(num);
                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