#include<iostream>
using namespace std;
int main()
{
	char a,b,c,d,e,f;
	cin>>a>>b>>c>>d>>e>>f;
	if(a==f&&b==e&&c==d) cout<<"YES"<<endl;
	else cout<<"NO"<<endl;
}
### Prompt

Your challenge is to write a CPP solution to the following problem:

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.

Examples

Input

pot
top


Output

YES


Input

tab
bet


Output

NO


Input

eye
eel


Output

NO

### Response

```cpp
#include<iostream>
using namespace std;
int main()
{
	char a,b,c,d,e,f;
	cin>>a>>b>>c>>d>>e>>f;
	if(a==f&&b==e&&c==d) cout<<"YES"<<endl;
	else cout<<"NO"<<endl;
}
```