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.
#https://codeforces.com/problemset/problem/41/A

def translation():

    s = input()
    t = input()

    n = len(s)
    #print(n)
    count = 0

    if n  == 1:
        #print("first")
        loop = 1
        for i in range (0, loop):
            if s[i] != t[i]:
                count = 1


    if n % 2 == 0:
        #print("first")
        loop = int(n/2)
        for i in range (0, n):
            if s[i] != t[n-i-1]:
                count = 1




    if n % 2 ==1:
        #print("second")
        loop = int((n+1)/2)

        for i in range (0, n):
            if s[i] != t[n - i - 1]:

                count = 1



    if count == 0:
        print("YES")

    else: print("NO")






translation()