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. */
   // String B = sc.next();
    int left  = 0 , right = A.length() - 1;
    boolean isPalindrome = true;

    while(left < right) {
        char l = A.charAt(left) , r = A.charAt(right);
        if(!Character.isLetterOrDigit(l)) {
            left++;
        }else if(! Character.isLetterOrDigit(r)) {
            right -- ;

        }if(l != r ){
            isPalindrome = false;
            break;

        }else {
            left++;
            right--;
        }

    }
    if(isPalindrome){
            System.out.println("Yes");
   }else {
            System.out.println("No");
        }
    sc.close();
}

}****