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()
lst1=[]
lst2=[]
lst3=[]
for i in x:
    lst1.append(i)
for i in y:
    lst2.append(i)
if lst1==lst2:
    for i in range(len(lst2)-1,-1,-1):
        lst3.append(lst2[i])        
    if lst1==lst3:
        print('YES')
    else: print('NO')
elif lst1!=lst2:
    lst1.sort()
    lst2.sort()
    if lst1==lst2:
        print('YES')
    else: print('NO')
