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.
# -*- coding: utf-8 -*-
"""Translation.ipynb

Automatically generated by Colaboratory.

Original file is located at
    https://colab.research.google.com/drive/1tzlNZ_3yVoXFdaNqCz-1ehpXr1U4Npai
"""

s = input().lower()
t = input().lower()

if 1<=len(s)<=100 and 1<=len(t)<=100:

  if len(s) != len(t):
    print('NO')

  elif s == t:
    print('NO')

  else:

    if s == t[::-1]:
      print('YES')

    else:
      print('NO')