The translation from the Berland language into the Birland language is not an easy task. Those languages are very similar: a berlandish word differs from a birlandish word with the same meaning a little: it is spelled (and pronounced) reversely. For example, a Berlandish word code corresponds to a Birlandish word edoc. However, it's easy to make a mistake during the «translation». Vasya translated word *s* from Berlandish into Birlandish as *t*. Help him: find out if he translated the word correctly.
The first line contains word *s*, the second line contains word *t*. The words consist of lowercase Latin letters. The input data do not consist unnecessary spaces. The words are not empty and their lengths do not exceed 100 symbols.
word1 = input()
word2 = input()

w1len = len(word1)
w2len = len(word2)



if w1len != w2len:
    print('NO')

else:


    if (w1len % 2) == 0:  # ES
        index = w1len - 1
        cant = w1len
        i = 0
        while cant != 0:
            a = word1[i]
            b = word2[index]



            if a == b:
                i += 1
                index -= 1
                cant -= 1

            else:
                print('NO')
                break
        if cant == 0:
            print('YES')

    else:
        index = w1len - 1
        cant = w1len
        i = 0
        while cant != 0:
            a = word1[i]
            b = word2[index]



            if a == b:
                i += 1
                index -= 1
                cant -= 1

            else:
                print('NO')
                break
        if cant == 0:
            print('YES')

