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.
# import sys
# sys.stdin = open("test.in","r")
# sys.stdout = open("test.out","w")
a=list(input())
b=list(input())
f=0
a=min(len(a),len(b))
for i in range(a):
	if a[i]==b[a-i-1]:
		f+=1
	else:
		f=0
		break
if f==0:
	print('NO')	
else:
	print('YES')			