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.
# with open("input.txt",'r') as f:
# 	t = int(f.readline().rstrip())
# 	# n = int(f.readline().rstrip())
	# n ,a,b   = int(f.readline().rstrip().split())
# 	# arr = list(map(int,f.readline().rstrip().split()))


def main(N,ans):
	string = N[::-1]
	if ans==string:
		print("YES")
	else:
		print("NO")
	return 

def text():
	with open("input.txt","r") as f:
		t = int(f.readline().rstrip())
		while t:
			N = int(f.readline().rstrip())
			# arr = list(map(int,f.readline().rstrip().split()))
			main(N)
			t-=1

def normal():
	string = str(input())
	ans = str(input())
	# arr = list(map(int,input().split()))
	main(string,ans)




# text()
normal()

