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 ()
t = input ()

n1 = len (s)
n2 = len (t)

flag = True

if (n1 == n2) :
    j = n2 - 1
    for i in range (n1) :
        c1 = s[i]
        c2 = t[j]
        j = j - 1

        if (c1 != c2) :
            print ("NO")
            flag = False
            break
else :
    print ("NO")
    flag = False

if (flag) :
    print ("YES")
