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.
e=input()   #berlandsk
i=input()   #birlandsk

c=0         #count begin
c1=1        #count end
out=0

if len(e) < len(i) or len(e) > len(i):    #проверяем на одинаковую длину строк
    print("NO")
    exit()
if len(e)%2 == 0:                         #для четного случая
    while c < len(e)/2:
        if e[c] != i[-c1]:
            print("NO")
            exit()
        c += 1
        c1 += 1
else:                                     #для нечетного случая
    while c < len(e)//2+1:
        if e[c] != i[-c1]:
            print("NO")
            exit()
        c += 1
        c1 += 1
    if e[len(e)//2+1] != i[len(i)//2+1]:
        print("NO")
        exit()
print("YES")