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: Accepted)

#include <stdio.h>
int main()
{
    char s1[200],s2[200];
    int i,j,c=0;
    scanf("%s",s1);
    scanf("%s",s2);
    int b=strlen(s2);
    for(i=0,j=b-1;s1[i]!='\0';i++,j--)
    {
        if(s1[i]!=s2[j])
            c=1;
    }
    if(c==0)
        printf("YES\n");
    else if(c==1)
        printf("NO\n");
    return 0;
}