Main.cc:1:1: error: ‘import’ does not name a type
    1 | import java.math.BigInteger;
      | ^~~~~~
Main.cc:2:1: error: ‘import’ does not name a type
    2 | import java.util.*;
      | ^~~~~~
Main.cc:3:5: error: expected unqualified-id before ‘public’
    3 |     public class Main{
      |     ^~~~~~