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();
String reverseString = new StringBuilder(A).reverse().toString();
if (A.equals(reverseString)) {
System.out.println("Yes");
} else {
System.out.println("No");
}
}
}
