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 B = "";
        char tmp;
        for (int i=0; i < A.length(); i++){
            tmp = A.charAt(i);
            B = tmp + B;
        }
        if (A.compareTo(B) == 0)
            System.out.println("Yes");
        else
            System.out.println("No");
    }
}