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 9.2.1) (judge verdict: Accepted)

#include<bits/stdc++.h>
using namespace std;
using ll = long long;
#define INF = 2e9
#define LINF = 1e18
#define rep(i, n) for(int i = 0; i < (int)(n); ++i)
#define all(x) (x).begin(),(x).end()
#define dump(x) cout << #x << "=" << (x) << endl
#define YES(n) cout << ((n) ? "YES" : "NO")
#define Yes(n) cout << ((n) ? "Yes" : "No")
#define PI 3.141592653589793

int main(){
    char c[2][3];
    rep(i,2){
        rep(j,3)cin >> c[i][j];
    }

    YES(c[0][0] == c[1][2] && c[0][1] == c[1][1] && c[0][2] == c[1][0]) << endl;

}