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 (GCC 5.4.1) (judge verdict: Accepted)

#define _CRT_SECURE_NO_WARNINGS

//#define DEBUG
#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#include<math.h>

int main() {
#ifdef DEBUG

#endif
	char C[2][4] = { '\0' };

	scanf("%s", C[0]);
	scanf("%s", C[1]);

	int i;
	for (i = 0; i < 3; i++)
	{
		if (C[0][i] != C[1][2 - i]) {
			printf("NO\n");
			return 0;
		}
	}
	printf("YES\n");
}