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 Rust (1.15.1) (judge verdict: Accepted)

fn solve(s1: &str, s2: &str) -> bool {
    s1 == s2.chars().rev().collect::<String>() && s1.chars().rev().collect::<String>() == s2
}

fn main() {
    let mut s1 = String::new();
    std::io::stdin().read_line(&mut s1).unwrap();
    let mut s2 = String::new();
    std::io::stdin().read_line(&mut s2).unwrap();
    let s3 = s1.trim();
    let s4 = s2.trim();

    if solve(s3, s4) {
        println!("YES")
    } else {
        println!("NO")
    }
}

#[test]
fn test_trim() {
    assert_eq!("ABC", "ABC\n".trim())
}