package strings;

//A palindrome is a word, phrase, number, or other sequence of characters which reads the same backward or forward.(Wikipedia)

//Given a string , print Yes if it is a palindrome, print No otherwise.

//

//Constraints

// will consist at most lower case english letters.

//Sample Input

//

//madam

//Sample Output

//

//Yes

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. */

boolean palindrome = true;

for(int i = 0; i<A.length()/2;i++)

{

if(!A.substring(i,i+1).equals(A.substring(A.length()-i-1,A.length()-i)))

{

palindrome = false;

}

}

if(palindrome){System.out.println("Yes");}

else{System.out.println("No");}

}

}