/in/Main.java:3: error: class test is public, should be declared in a file named test.java
public class test{
       ^
/in/Main.java:5: error: cannot find symbol
Scanner sc=new Scanner(System.in);
^
  symbol:   class Scanner
  location: class test
/in/Main.java:5: error: cannot find symbol
Scanner sc=new Scanner(System.in);
               ^
  symbol:   class Scanner
  location: class test
3 errors