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: Wrong Answer)

#include <stdio.h>
#include <string.h>
#include <math.h>
int main()
{
    char s[100];
    gets(s);
    int n,t=0;
    n=strlen(s);
    for (int i=n-1; i>=0; i--)
    {
        printf ("%c",s[i]);
    }
    printf ("\n");
    for (int i=n-1; i>=0; i--)
    {
        if(s[i]==s[n-i])
            t++;
    }
    if(t==n)
        printf ("This grid remains the same when rotated 180 degrees.");
    else
        printf("This grid does not remain the same when rotated 180 degrees.");
}