Main.java:3: error: cannot find symbol
    public static void main(String[] args) throws IOException {
                                                  ^
  symbol:   class IOException
  location: class Main
Main.java:4: error: cannot find symbol
        Scanner sc = new Scanner(System.in);
        ^
  symbol:   class Scanner
  location: class Main
Main.java:4: error: cannot find symbol
        Scanner sc = new Scanner(System.in);
                         ^
  symbol:   class Scanner
  location: class Main
3 errors