from string import ascii_lowercase


def main():
    N = int(input())
    S = input()

    forward = ascii_lowercase
    reverse = ascii_lowercase[::-1]

    letter_dict = {
        f_letter: r_letter for f_letter, r_letter in zip(forward, reverse)
    }

    backward_word = "".join(letter_dict[letter] for letter in S)
    print(backward_word)


if __name__ == "__main__":
    main()