BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); String name = reader.readLine(); int number = Integer.parseInt(name); int positive; int negative; int zero; if (number == positive) { System.out.println(positive * 2); } else if (number == negative) { System.out.println(negative + 1); } else if (number == zero) { System.out.println(0); }