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 Mon Sep 28 21:11:47 2020

@author: Rahul Kumar
"""



def check_str(s, t, length):
    j = length-1
    for i in range(0, length):
        if t[i] == s[j]:
            j -= 1
        else:
            return "NO"
    return "YES"

if __name__ == "__main__":
    s = list(input())
    t = list(input())

    if len(s) != len(t):
        print("NO")
    else:
        print(check_str(s, t, len(s)))