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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