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.
S1=input()
S2=input()
n1,n2 = len(S1),len(S2)
if n1!=n2:
    print('NO')
else:
    sb = 0
    for i in range (n1):
        if (S1[i]!=S2[n1-1-i]):
            sb=1
    if (sb==0):
        print('YES')
    else:
        print ('NO')