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

   sc.close(); 
}

}