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  1. #include <iostream>
  2. #include <cmath>
  3. using std::cin;
  4. using std::cout;
  5. using std::endl;
  6.  
  7. double foo(unsigned int N, double x)
  8. {
  9.     double S = std::sqrt(x + 1);
  10.     for (unsigned int n = 0; n < N; ++n)
  11.         S = std::sqrt(x + (n+1) * std::floor(S));
  12.     return S;
  13. }
  14.  
  15. int main()
  16. {
  17.     while (true)
  18.     {
  19.     	unsigned int N;
  20.     	double x;
  21.     	cin >> N >> x;
  22.     	if (cin.fail())
  23.     		break;
  24.     	cout << foo(N, x) << endl;
  25.     }
  26. }
Success #stdin #stdout 0s 5568KB
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stdin
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2 2
3 1.5
stdout
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2
2.12132
https://ideone.com/f6CAkQ
language:
C++14 (clang 8.0)
created:
2 years ago
visibility:
public

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