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()

if len(s1) != len(s2):
	print("NO")
	exit()
i = 0
j = len(s2) - 1

while i < len(s1) and j >= 0 :
	if s1[i] == s2[j]:
		i += 1
		j -= 1
	else:
		break		
# print(i, j)
if i == len(s1) and j == -1:
	print("YES")
	
else:
	print("NO")
