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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	long long int m,n,c;
  6. 	cin>>m>>n;
  7. 	long long int a=max(m,n);
  8. 	long long int b=min(m,n);
  9. 	c=(a*(a+1)/2)-((b-1)*b/2);
  10. 	cout<<c;
  11. 	return 0;
  12. 	// your code goes here
  13. 	return 0;
  14. }
Success #stdin #stdout 0.01s 5472KB
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https://ideone.com/Ahm2ZB
language:
C++14 (gcc 8.3)
created:
1 year ago
visibility:
public

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