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.
a=input()
b=input()
c=list(a)
d=list(b)
n=len(a)
m=len(b)
s='YES'
if m!=n:
    s='NO'
else:
    for i in range(n):
        if c[i]!=d[n-1-i]:
            s='NO'
            break
print(s)
    
