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.
# Problem: A. Translation
# Contest: Codeforces - Codeforces Beta Round #40 (Div. 2)
# URL: https://codeforces.com/problemset/problem/41/A
# Memory Limit: 256 MB
# Time Limit: 2000 ms
# 
# Powered by CP Editor (https://cpeditor.org)

""" Python 3 compatibility tools. """
import sys
input = sys.stdin.readline

############ ---- Input Functions ---- ############
def inp():
    return(int(input()))

def inlt():
    return(list(map(int,input().split())))

def insr():
    s = input()
    return(list(s[:len(s) - 1]))

def invr():
    return(map(int,input().split()))
    
line1 = input().strip()
line2 = input().strip()
print("YES" if line1[:] == line2[::-1] else "NO")