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.