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