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 (Clang 3.8.0) (judge verdict: Wrong Answer)

#include<stdio.h>
#include<stdlib.h>
#include<string.h>

int main()
{
    char ch1[4];
    char ch2[4];
    char ch3[4]={0};
    gets(ch1);
    gets(ch2);
    int i;
    for(i=0; i<3; i++)
    {
        ch3[i]=ch1[2-i];
    }
    if(strcmp(ch3,ch2)==0)
    {
        printf("YES\nThis grid remains the same when rotated 180 degrees.\n");
    }
    if(strcmp(ch3,ch2)!=0)
    {
        printf("NO\nThis grid does not remain the same when rotated 180 degrees.\n");
    }
    return 0;
}