def main() -> None:
    cnt = [0] * 8

    for c in oct(int(input(), base=16))[2:]:
        cnt[ord(c) - ord('0')] += 1

    max_cnt = max(cnt)
    is_first = True

    for i in range(8):
        if cnt[i] == max_cnt:
            if not is_first:
                print(' ', end='')
            else:
                is_first = False

            print(i, end='')

    print()


if __name__ == '__main__':
    main()