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.
# el francos
s = input()
t = input()

t_is_s = True

if len(s) == len(t):
    head = 0
    tail = len(t)
    while(head < len(s)):
        if s[head] != t[tail-1]:
            t_is_s = False
            break
        else:
            head += 1
            tail -= 1
else:
    t_is_s = False

if t_is_s:
    print("yes")
else:
    print("no")
  		   			  	 	 			 	 	 				 	