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();
    /* Enter your code here. Print output to STDOUT. */
     String reveresed = new StringBuilder(A).reverse().toString();
    if (A.equals(reveresed)) {
        System.out.println("Yes");
    }
    else{
        System.out.println("No");
    }
}

}