fork download 
  1. import java.util.*;
  2. import java.lang.*;
  3. import java.io.*;
  4.  
  5. public class Main
  6. {
  7. 	public static void main (String[] args) throws java.lang.Exception
  8. 	{
  9. 		Scanner in = new Scanner(System.in);
  10. 		long n = in.nextInt(), a = in.nextInt(), ans;
  11. 		if (a > 1)
  12. 		{
  13. 			ans = n*a;
  14. 			for(long i = n-1; i > 0; --i)
  15. 				ans = (ans+i)*a;
  16. 		}
  17. 		else
  18. 			ans = n*(n+1)/2;
  19. 		System.out.println(ans);
  20. 	}
  21. }
Success #stdin #stdout 0.1s 2841600KB
comments (?)
stdin 
4 1
stdout 
10
https://ideone.com/nBHmMV
eo1210
language:
Java (12.0.1)
created:
7 years ago
visibility:
secret

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!