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.
# 2
# s = input()
# arr = s.split("+")
# map_object = map(int, arr)
# list_of_integers = list(sorted(map_object))
# s_upd = ""
# for i in range(0, len(list_of_integers) - 1):
#     s_upd += str(list_of_integers[i]) + "+"
# print(s_upd + str(list_of_integers[len(list_of_integers) - 1]))

# 8
s = input()
t = input()
s = "".join(reversed(s))
if t == s:
    print("YES")
else:
    print("NO")

# upper = 0
# lower = 0
# s = input()
#
# for i in range(0, len(s)):
#     if s[i] >= 'a':
#         lower = lower + 1
#     else:
#         upper = upper + 1
#
# if upper > lower:
#     for i in range(0, len(s)):
#         if s[i] >= 'a':
#             s[i] -= 32
#
# else:
#     for i in range(0, len(s)):
#         if 'A' <= s[i] <= 'Z':
#             s[i] += 32
#
# print(s)
