/*

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*/

/**

*

* @author Dell

*/

import java.io.*;

import java.util.*;

public class JavaStringReverse {

public static void main(String[] args){

Scanner sc = new Scanner(System.in);

String s = sc.next();

char[] c = s.toCharArray();

int a = c.length;

// System.out.println("String length is :: "+ a);

char[] test = new char[c.length];

for(int i = 0 ; i < test.length; i++){

test[i] = c[(a - i) - 1];

}

String test2 = String.valueOf(test);

if(test2.equals(s)){

System.out.println("Yes");

}

else{

System.out.println("No");

}

}

}