import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main {
    private static java.util.Scanner scanner = new java.util.Scanner(System.in);

    public static void main(String[] args) {
        String s = scanner.next();
        long k = scanner.nextLong();
        Matcher matcher = Pattern.compile("[2-9]").matcher(s);
        if (matcher.find() && matcher.start() < k) {
            System.out.println(matcher.group());
        } else {
            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