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 = input()
t = input()

if len(s) != len(t):
    print('Error')
    
else:
    tmp = list(s)
    n = len(tmp)
    for i in range(n):
        tmp[i], tmp[n-i-1] = tmp[n-i-1], tmp[i]
        
    word = ''.join(tmp)
    
    if word == t:
        print('YES')
    
    else:
        print('NO')