import java.util.Scanner;

class Main {
    static char calc(String str, int index) {
        char answer = str.charAt(0);

        if (str.charAt(0) == '1') {
            int lastIndex = 0;
            for (int i = 1; i < str.length(); i++) {
                if (str.charAt(i) == '1') {
                    lastIndex = i;
                } else {
                    break;
                }
            }

            if (index - 1 <= lastIndex) {
                answer = '1';
            } else {
                answer = str.charAt(lastIndex + 1);
            }
        }

        return answer;
    }

    public static void main(String args[]) {
        String S;
        int K;

        Scanner sc = new Scanner(System.in);
        S = sc.next();
        String k_s = sc.next();
        K = k_s.length() > 3 ? 101 : Integer.valueOf(k_s);

        System.out.println(calc(S, K));
    }
}

/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