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()
cx=0
cy=len(y)-1
if len(x)>len(y):
    print ("NO")
elif len(y)>len(x):
    print("NO")
elif len(x)==len(y):
    k=0
    u=len(y)
    while(cx < u):
        if x[cy]==y[cx]:
            k+=1
            cy-=1
            cx+=1
        else:
            cy-=1
            cx+=1
    if k==len(x):
        print("YES")
    else:
        print("NO")