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)

#include<stdio.h>
#include<string.h>
char str1[100],str2[100],temp[100];
int main()
{
    int i,j=0,t;
    scanf("%s[^\n]",str1);
    scanf("%s[^\n]",str2);
    i=strlen(str1);
    t=i-1;
    if(strlen(str1)!=strlen(str2))
    {
        printf("NO\n");
    }
    else
    {
        while(str1[j]!='\0')
        {
            temp[j]=str1[t];
            j++;
            t--;
        }
        t=0;
        i=0;
        while(temp[i]!='\0')
        {
            if(temp[i]==str2[i])
            {
                t++;
            }
            i++;
        }
        if(strlen(str2)==t)
        {
            printf("YES\n");
        }
        else if(strlen(str2)!=t)
        {
            printf("NO\n");
        }
    }
    return 0;
}