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.
n=input()
n=list(n)
s=input()
s=list(s)
c=0
k=0
temp=''
if len(n)!=len(s):
    print("NO")
else:
    for i in range(len(s)):
        d=s[-1-i]
        temp=temp+d
    for i in range(len(n)):
        if n[i]==temp[i]:
            c=c+1
    if c==len(n):
        print("YES")
    else:
        print("NO")