fork(1) download 
  1. #include <iostream>
  2. using namespace std;
  3. int main() {
  4.     int k, n, w;
  5.     cin>>k>>n>> w;
  6.     int tc= k*w*(w + 1)/ 2;
  7.     if (tc <= n) {
  8.         cout << 0 << endl;
  9.     } else {
  10.         cout <<tc-n<< endl;
  11.     }
  12.     return 0;
  13. }
  14.  
Success #stdin #stdout 0.01s 5324KB
comments (?)
stdin 
3 17 4
stdout 
13
https://ideone.com/a8wD6F
language:
C++14 (gcc 8.3)
created:
8 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!