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.
s_1=list(str(input()))
s_2=list(str(input()))
k=len(s_2)

if len(s_1)!=len(s_1):
    print('NO')
    exit()
if len(s_1)==len(s_2):
    for i in range (len(s_1)):
        if s_1[i]!=s_2[k-1]:
            print('NO')
            exit()
        k-=1
        
print('YES')
