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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int n; 
  6. 	double a;
  7. 	cin >> n;
  8. 	double s = 0.0;
  9. 	for (int  i = 0; i < n; i++){
  10. 		cin >> a;
  11. 		for(int j = 1; j<=i; j++){
  12. 			a/= j*1.0;
  13. 		}
  14. 		s+=a;
  15. 	}
  16. 	cout << s <<"\n";
  17. 	return 0;
  18. }
Success #stdin #stdout 0s 3232KB
comments (?)
stdin
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3 6 9 3
stdout
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16.5
https://ideone.com/nKS0zD
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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