View Compilation Error

0_0_38974256_13681.cpp:1:1: error: 'package' does not name a type
    1 | package com.hhhyixin.book.cp06.HDU_2037;
      | ^~~~~~~
0_0_38974256_13681.cpp:3:1: error: 'import' does not name a type
    3 | import java.util.Scanner;
      | ^~~~~~
0_0_38974256_13681.cpp:3:1: note: C++20 'import' only available with '-fmodules-ts', which is not yet enabled with '-std=c++20'
0_0_38974256_13681.cpp:5:1: error: expected unqualified-id before 'public'
    5 | public class Main {//贪心算法
      | ^~~~~~