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>
int main(void)
{
  int out=0,ok=0,i,j=0;
  char square[8][4],str[64];
  
  for(i=0;i<2;i++)
  {
  	fgets(str,sizeof(str),stdin);
  	sscanf(str,"%c%c%c",&square[i][0],&square[i][1],&square[i][2]);
  }

  while ((out == 0)&&(ok<3))
  {
    if(square[0][j] == square[1][2-j])
    {
      ok++;
    }else
    {
      out++;
    }
    j++;
  }
  if(out == 0)
  {
    puts("YES");
  }else
  {
    puts("NO");
  }
  
  return 0;
}