Problem:
Score : 100 points

Problem Statement

You are given a three-digit positive integer N.

Determine whether N is a palindromic number.

Here, a palindromic number is an integer that reads the same backward as forward in decimal notation.

Constraints

100≤N≤999

N is an integer.

Input

Input is given from Standard Input in the following format:

N

Output

If N is a palindromic number, print Yes; otherwise, print No.

Sample Input 1

575

Sample Output 1

Yes

N=575 is also 575 when read backward, so it is a palindromic number. You should print Yes.

Sample Input 2

123

Sample Output 2

No

N=123 becomes 321 when read backward, so it is not a palindromic number. You should print No.

Sample Input 3

812

Sample Output 3

No

Solution in Rust (1.15.1) (judge verdict: Accepted)

use std::io;
fn main(){
    let mut s = String::new(); /*mutはmutableを指す*/
    io::stdin().read_line(&mut s).ok();
    let num = s.trim().to_string();
    if num.chars().nth(0).unwrap() == num.chars().nth(2).unwrap(){
        println!("Yes");
    }
    else{
        println!("No");
    }
}