0_0_39769117_19133.cpp:1:1: error: 'package' does not name a type
1 | package work1;import java.util.Scanner;//引入Scannerimport java.math.BigInteger;//引入BigIntegerpublic class Problem1002 { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int t = sc.nextInt(); BigInteger number1,number2; for(int i = 1;i <= t; i++) { System.out.println("Case "+i+":"); number1 = sc.nextBigInteger(); number2 = sc.nextBigInteger(); System.out.println(number1+" + "+number2+" = "+number1.add(number2)); if(i < t) System.out.println(); } }}
| ^~~~~~~
0_0_39769117_19133.cpp:1:15: error: 'import' does not name a type
1 | package work1;import java.util.Scanner;//引入Scannerimport java.math.BigInteger;//引入BigIntegerpublic class Problem1002 { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int t = sc.nextInt(); BigInteger number1,number2; for(int i = 1;i <= t; i++) { System.out.println("Case "+i+":"); number1 = sc.nextBigInteger(); number2 = sc.nextBigInteger(); System.out.println(number1+" + "+number2+" = "+number1.add(number2)); if(i < t) System.out.println(); } }}
| ^~~~~~
0_0_39769117_19133.cpp:1:15: note: C++20 'import' only available with '-fmodules-ts', which is not yet enabled with '-std=c++20'
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