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.
x = input()
y = input()
lx, ly = len(x), len(y)
if lx != ly:
    print "NO"
else:
    ans = 0
    for i in range(lx):
        if x[i] == y[ly - 1 - i]:
            ans += 1
    if ans == lx:
        print "YES"
    else
        print "NO"