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();
    StringBuffer s = new StringBuffer(A);
    s.reverse();
    if(A.compareTo(s.toString())==0)
     System.out.println("Yes");
    else
     System.out.println("No");


}

}