class Main {
        public static void main(String[] args) {
                String s1 = "A";
                String s2 = "B";
                String s3 = "C";

                String result = ((s1==null)?"":(s1+"/"))+((s2==null)?"":(s2+"/"))+((s3==null)?"":s3);
                System.out.println("Result = "+result);

                s1 = null;
                result = ((s1==null)?"":(s1+"/"))+((s2==null)?"":(s2+"/"))+((s3==null)?"":s3);
                System.out.println("Result = "+result);

                s1 = "A"; s2 = null;
                result = ((s1==null)?"":(s1+"/"))+((s2==null)?"":(s2+"/"))+((s3==null)?"":s3);
                System.out.println("Result = "+result);

        }

}