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.
n =2
a =[]
s=0
for i in range (n):
	m =input()
	for j in m:
		a.append(j)
l = int(len(a)/2)
k = len(a)
if k == 2:
			if a[0]==a[1]:
				print("YES")
			else:
				print("NO")
else:
	while(k >l):
		for i in range(l):
			if a[i] ==a[k-1]:
				s +=1
				k-=1
		#SO SANH KI TU 1-8 2-7 3-6
	if s == l:
		print("YES")
	else:
		print("NO")