Problem:
Score : 100 points

Problem Statement

You are given a grid with 2 rows and 3 columns of squares.
The color of the square at the i-th row and j-th column is represented by the character C_{ij}.

Write a program that prints YES if this grid remains the same when rotated 180 degrees, and prints NO otherwise.

Constraints

C_{i,j}(1 \leq i \leq 2, 1 \leq j \leq 3) is a lowercase English letter.

Input

Input is given from Standard Input in the following format:

C_{11}C_{12}C_{13}
C_{21}C_{22}C_{23}

Output

Print YES if this grid remains the same when rotated 180 degrees; print NO otherwise.

Sample Input 1

pot
top

Sample Output 1

YES

This grid remains the same when rotated 180 degrees.

Sample Input 2

tab
bet

Sample Output 2

NO

This grid does not remain the same when rotated 180 degrees.

Sample Input 3

eye
eel

Sample Output 3

NO

Solution in C++14 (GCC 5.4.1) (judge verdict: Accepted)

# include <bits/stdc++.h>

std :: vector < char > v [2] ;

int main ( )  {
	char s [100] ;
	for ( int i = 0 ; i < 2 ; ++ i )  {
		scanf ( "%s", s ) ;
		for ( char* pt = s ; *pt ; ++ pt )  v [i].push_back ( *pt ) ;
	}

	std :: reverse ( v [1].begin ( ), v [1].end ( ) ) ;

	puts ( v [0] == v [1] ? "YES" : "NO" ) ;

	return 0 ;

}