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 -*-
"""
Created on Thu Nov  1 21:40:11 2018

@author: Acer
"""

word1 = input()
word2 = input()
n = len(word1)
k = len(word2)
if n == k:
    i = sum(word1[j] == word2[n - 1 - j] for j in range(n))
    if i == n:
        print('YES')
    else:
        print('NO')
else:
    print('NO')
        