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.
s1=input()
s2=input()
p=[]
q=[]
c=0
if len(s1)==1 and len(s2)==1:
    if s1==s2:
        print("YES")
    else:
        print("NO")
        
elif (len(s1)>1 and len(s2)>1) or (len(s1)>1 and len(s2)==1) or (len(s1==1) and len(2)>1):
    for i in range (len(s1)):
        p.append(s1[i])
    for j in range (len(s2)):
        q.append(s2[j])
    q.reverse()
    if p==q:
        print("YES")
    else:
        print("NO")
