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  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
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https://ideone.com/YKV2L3
472 Java
language:
Java (HotSpot 12)
created:
6 years ago
visibility:
public

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