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.
# -*- coding: utf-8 -*-
C1 = input()
C2 = input()
if C1[0] == C2[2] and C1[1] == C2[2] and C1[2] == C2[0]:
    print('YES')
else:
    print('NO')
# -*- coding: utf-8 -*-
C1 = input()
C2 = input()
if C1[0] == C2[2] and C1[1] == C2[1] and C1[2] == C2[0]:
    print('YES')
else:
    print('NO')