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 Java8 (OpenJDK 1.8.0) (judge verdict: Runtime Error)

import java.util.*;

class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        long K =sc.nextLong();
        final long nMax = 1000000;
        long ans = Long.MAX_VALUE;
        long i = 1L;
        while(i<=nMax){
            long j=i*K;
            long cur = 0;
            while(j>0){
                cur += j%10;
                j = j/10;
            }
            ans = Math.min(ans,cur);
            i++;
        }
        /*for(int i=1;i<=nMax;i++){
            long j = K*i;
            int cur = 0;
            while(j>0){
                cur += j%10;
                j = j/10;
            }
            ans = Math.min(ans,cur);
        }*/


        System.out.println(ans);
    }
}