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/contest/41/problem/A
a = input()
b = input()
# if a == b[::-1]:
#     print("YES")
# else:
#     print("NO")

l = len(a) - 1 
i = 0

if len(a) != len(b):
    print("NO")

else:
    while i < len(a) and l > -1:
        if a[i] != b[l]:
            print("NO")
            break
        l -= 1
        i += 1

    else:
        print("YES")



