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.
s = input()
s0=input()
s = list(s)
l = len(s)
i = 0
if l % 2 == 0:
    while i < l/2:
        s[i], s[-i-1] = s[-i-1], s[i]
        i += 1
if l % 2 != 0:
    while i < int(l/2):
        s[i],s[-i-1]=s[-i-1],s[i]
        i+=1
a=(''.join(s))
if a==s0:
    print('YES')
else:
    print('NO')