import java.io.*;
import java.util.*;

public class Solution {

    public static void main(String[] args) {
        var entry = new Scanner(System.in);
        
        String word = entry.next();
        var wordBuilder = new StringBuilder(word);
        
        String response = word.equals(wordBuilder.reverse().toString()) ? "Yes": "No";
        System.out.println(response);
    }
}