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  1. #include <iostream>
  2. #include <cmath>
  3. using namespace std;
  4.  
  5. int main() {
  6. int i  = 1;
  7. double sum = 0;
  8.     while (i <= 2025) {
  9.  
  10. sum += 1/sqrt(i);
  11. i++;
  12. } 
  13. cout << sum * sum;
  14. 	return 0;
  15. }
Success #stdin #stdout 0.01s 5284KB
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7841.24
https://ideone.com/KPDgP8
language:
C++ (gcc 8.3)
created:
2 days ago
visibility:
public

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