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 found = true;
		for (int i = 0; i < A.length() / 2; i++) {
			if (A.charAt(i) != A.charAt(A.length() - 1 - i)) {
				found = false;
				break;
			}
		}
		System.out.println(found ? "Yes" : "No");
	}
}