洪子涵

1. import java.util.Scanner;
   
2. public class AA {
   
3.         public static Scanner s = new Scanner(System.in);
   
4.         public static void main(String[] args) {
   
5.                 int a=s.nextInt();
   
6.                 System.out.println(1.6*(double)(a));
   
7.         }
   
8. 
   
9. 
   
10. }

複製代碼