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 Fortran (gfortran v4.8.4) (judge verdict: Accepted)

program ABC_077_A_Rotation
   implicit none
   integer i, countN
   character(3) c1, c2
   read(*, *) c1, c2
   countN = 0
   do i = 1, 3
       if(c1(i:i) == c2(4-i:4-i)) then
	       countN = countN + 1
	   end if
   end do
   if(countN == 3) then
       write(*, *) 'YES'
   else
       write(*, *) 'NO'
   end if
end program ABC_077_A_Rotation