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()
##summ = n.count("l")
##word = ['h','e','l','o']
##a = 0
##for i in range(len(n)):
##    for j in range(len(word)):
##        if(len(n) == 5) :
##            if(n[i] == word[j]):
##                a = 0
##        else:
##            if(summ > 1):
##                if(n[i] == word[j]):
##                    a += 1
##            else:
##                a = 0
##if(a >= 1):
##    print("YES")
##elif(a == 0):
##    print("NO")

n = input()
m = input()
a = 0
if(len(n) == len(m)):
    for i in range(len(n)):
        if(n[i] == m[-1-i]):
            a += 1
if(a == len(n)):
    print("YES")
else:
    print("NO")
    

