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  1. #include <iostream>
  2. #include <cmath>
  3. using namespace std;
  4.  
  5. int main() {
  6. 	double sum=0, xn=1, eps;
  7. 	int n=0, z;
  8. 	cin >> eps >> z;
  9. 	while(xn>=eps){
  10. 		n++;
  11. 		xn=pow(M_E, -pow(n,1.0/3));
  12. 		sum+=xn;
  13. 	}
  14. 	cout << n << " " << sum;
  15. 	return 0;
  16. }
Success #stdin #stdout 0.1s 3472KB
comments (?)
stdin
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1e-40 2
stdout
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781317 5.71208
https://ideone.com/E43XCk
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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