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.
nom_normal = input()
nom_inverse = input()

n=len(nom_inverse) 
n_normal = len(nom_normal)

compteur_nom = 0

if (n_normal == n): 
    for j in range(n):
        if nom_inverse[j]==nom_normal[n-j-1]:
            compteur_nom+= 1 
        else:
            print('NO')
            break
else : 
    print('NO')

if compteur_nom==n:
    print('YES')
    
