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  1. #include <iostream>
  2.  
  3. using namespace std;
  4.  
  5. int main()
  6. {
  7. 	unsigned int n;
  8. 	float a, fSummand;
  9. 	cin>>a>>n;
  10. 	float fSum = 0;
  11. 	for(int i=1; i<=n; i++)
  12. 	{
  13. 		fSummand = i;
  14. 		for(int j=i; j>2; j--)
  15. 			fSummand *= (j - 1);
  16. 		fSum += a/fSummand;
  17. 	}
  18. 	cout<<fSum<<endl;
  19. 	return 0;
  20. }
Success #stdin #stdout 0s 3476KB
comments (?)
stdin
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2 3
stdout
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3.33333
https://ideone.com/7uPGGk
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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