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  1. #include <cmath>
  2. #include <iostream>
  3. using namespace std;
  4. int poww(int b,int k) {
  5.   return (!k)?1:b*poww(b,k-1);
  6. }
  7. int main() {
  8. 	int a;
  9. 	cin>>a; 
  10. 	double s=0;
  11. 	long double f=1;
  12. 	double e=10;
  13. 	for(int n=2;e>0.000001;n++){
  14. 	f*=n;
  15. 	s+=log(f)/poww(n,a);
  16. 	e=log(f)/poww(n,a);
  17. 	}
  18. 	cout<<s;
  19. 	return 0;
  20.  
  21. }
Success #stdin #stdout 0s 4212KB
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stdout
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1.65259e-07
https://ideone.com/GotdUD
d2630
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
secret

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