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. */
    int start=0;
    int end=A.length()-1;
    boolean isPalindrome=true;
     while(start<=end){
        if(A.charAt(start)!=A.charAt(end)){
            isPalindrome=false;
            break;
        }else{
            start++;
            end--;
        }
    }
    System.out.println(isPalindrome?"Yes":"No");
    sc.close();

}

}