String A = sc.next();
    String revA = new String();

    for(int i=A.length(); i>0; i--){
        //revA += A.substring(i-1,i);
        revA = revA.concat(A.substring(i-1,i));
    }

    if(A.compareToIgnoreCase(revA) == 0){
        System.out.print("Yes");
    } else {
        System.out.print("No");
    }