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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int n;
  6. 	cin >> n;
  7. 	double result = 1;
  8. 	while( n-- )
  9. 	{
  10. 		result *= (n*6 + 1.)/(n*6 + 2);
  11. 	}
  12. 	cout << result << endl;
  13.  
  14. 	return 0;
  15. }
Success #stdin #stdout 0s 3300KB
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https://ideone.com/zZX5X8
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
secret

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