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.
a = input()
b = input()
strings = ""

cond = True
if len(a) == len(b) :
    for i in range (len(a)-1,-1,-1) :
        if a[i] == "s" :
            strings += "t"
        # elif a[i] == "t" :
        #     strings += "s"
        else :
            strings += a[i]

            if i == 0 :
                if strings != b :
                    cond = False
else :
    cond = False

if cond == False :
    print("NO")
else :
    print("YES")