import java.io.; import java.util.;

public class Solution {

public static void main(String[] args) {

    Scanner sc=new Scanner(System.in);
    String A=sc.next();

    if (A.equals(new StringBuffer(A).reverse().toString())){
        System.out.println("Yes");
    }else{
        System.out.println("No");
    }

}

}