fork download
copy 
  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5.  
  6. 	int n,m ;
  7. 	cin >> n >> m ;
  8.  
  9. 	int a = n/m ;
  10. 	int b = n%m ;
  11. 	long long z = (long long) a*(a-1)/2*(m-b) + b*a*(a+1)/2 ;
  12. 	cout << z << ' ' ;
  13.  
  14. 	n = n+1-m ;
  15. 	z = (long long) n*(n-1)/2 ;
  16. 	cout << z ;
  17.  
  18. 	return 0;
  19. }
Success #stdin #stdout 0s 15232KB
comments (?)
stdin
copy 
1000000000 1
8
5
111
17
stdout
copy 
499999999500000000 499999999500000000
https://ideone.com/EViuh5
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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!