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.
def getLines(num):
  inputLines = []
  for i in range(0,num):
    line = input()
    if line:
      inputLines.append(line)
    else:
        break
  return inputLines
 
def notZeroPow(num,p):
  return True if num >= 1 and num <= pow(10,p)  else False
 
 
lines = getLines(2)

w = lines[1]
s = lines[0]
wt = s[::-1]

print("YES" if wt == w else "NO")