DemoApplication app = new DemoApplication(System.in,
new InputStreamReader(System.in, "UTF-8"),
new PrintWriter(new OutputStreamWriter(System.out, "UTF-8")),
DemoApplication app = new DemoApplication(System.in,
new InputStreamReader(System.in, "UTF-8"),
new PrintWriter(new OutputStreamWriter(System.out, "UTF-8")),