fork download
  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6. import java.util.Scanner;
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Main
  9. {
  10. public static void main (String[] args) throws java.lang.Exception
  11. {
  12. Scanner in = new Scanner(System.in);
  13. int n;
  14. n = in.nextInt();
  15. System.out.print(2 * n * n - n);
  16. }
  17. }
Success #stdin #stdout 0.11s 2184192KB
stdin
5
stdout
45