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# (Mono 4.6.2.0) (judge verdict: Accepted)

using System;
using System.Collections;
using System.Linq;


public class ABC077_Rotation
{
	public static void Main()
	{
		string line1 = Console.ReadLine();
        string line2 = Console.ReadLine();
        char[] c = line2.ToCharArray();
        Array.Reverse(c);
        string s = "";
        for(int i = 0 ; i < c.Length ; i++){
            s += c[i].ToString();
        }

        if(line1 == s){
            Console.WriteLine("YES");
        } else {
            Console.WriteLine("NO");
        }
	}
}