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.
string1 = str(input())
string2 = str(input())


# code
# edoc
pointer2 = len(string2) - 1
pointer1 = 0
boolean = True
while pointer2 != -1:
    if string2[pointer2] == string1[pointer1]:
        print(string2[pointer2], string1[pointer1])
        pointer2 -= 1
        pointer1 += 1
    else:
        print("NO")
        boolean = False
        break
if boolean:
    print("YES")

