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++14 (GCC 5.4.1) (judge verdict: Accepted)

#include<bits/stdc++.h>	
#define rep(i,n) for(int i=0; i<n; i++)
using namespace std;
typedef long long ll;
const int INF=1001001001;
typedef pair<int ,int > P;

const int N_MAX=100, M_MAX=100;
char p[N_MAX+1][M_MAX+1];

int main(){
	string a,b;
	cin >> a;
	cin >> b;
	if(a[0]==b[2] && a[1]==b[1] && a[2]==b[0]) cout << "YES" << endl;
	else cout << "NO" << endl;

	return 0;
}