here's my code: BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); String aa = reader.readLine(); int a = Integer.parseInt(aa); String bb = reader.readLine(); int b = Integer.parseInt(bb); String cc = reader.readLine(); int c = Integer.parseInt(cc); if (((a>0)&&(b>0))&&(c>0)){ System.out.println(3); } else if (((a>0)&&(b>0))&&(c<=0)){ System.out.println(2); } else if (((a>0)&&(b<=0))&&(c<=0)){ System.out.println(1); } else if (((a<=0)&&(b<=0))&&(c<=0)){ System.out.println(0); } } }