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, a = input().split()

#a = input().split()

k = input()
n = input()
#k = [i for i in k]
#k = [input().split() for i in range(int(a))]
#n = input().split()

#n = [i for i in n[0]]

'''
cont = [
'a', 'b', 'c', 'd', 'e', 'f', 'g',
'h', 'i', 'j', 'k', 'l', 'm', 'n',
'o', 'p', 'q', 'r', 's', 't', 'u',
'v', 'w', 'x', 'y', 'z'
]
'''
#n = a[1]
#a = a[0]

s = ''
for i in range(len(k)-1,-1,-1):
    s += k[i]
if s == n:
    print('YES')
else:
    print('NO')

