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.
# print('YES'  if input()[: : -1] == input() else 'NO')

# Way of C
s = input()
t = input()

ln = len(s)
ln_t = len(t)

output  = 'YES'

if ln == ln_t:
    for i in range(ln):
        if s[i] != t[ln -i -1]:
            output = 'NO'
            break
else:
    output = 'NO'


print(output)