fork download
copy 
  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int k,n,w;
  6. 	cin >> k >> n >> w;
  7. 	int totalrequired = 0;
  8. 	for(int i =1;i<=w;i++){
  9. 		totalrequired+= i*k;
  10. 	}
  11. 	cout << totalrequired - n << endl;
  12.  
  13. 	return 0;
  14. }
Success #stdin #stdout 0s 5304KB
comments (?)
stdin
copy 
3 17 4
stdout
copy 
13
https://ideone.com/RCjgmj
language:
C++ (gcc 8.3)
created:
12 days 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!